2 Instruments and Equipment Each product is followed by an alphabetical listing of manufacturers. Listings of this section begin on page 31
Instruments and Equipment Classification List
2
Bold face listings are subdivided A abrasives absorption spectra charts (reference) absorption meters, ultraviolet — see UV equip. absorption bulbs — see combustion equip. accelerators — see radiation equip, acid handling equip. — see also chemical handling equip. acoustic equip. — see also spectrometers, acoustical, activation analysis equip, —see radiation equip. adapters, glass — see glassware adsorption gas apparatus agitators — see shakers and mixers air cleaners air dryers air filters — see filters, air sampling air particle size instruments — see particle size apparatus ak sampling and analysis equip. a l a r m systems—41LG alarms, radiation — see radiation equip. alarms, temperature alkalimeters alloys, special altitude chambers — see test chambers ammeters ammeters, log micro ammeters, micro amplifiers — see also radiation equip. —42LG analog signal correlators analysis equip. — see ultrasonic equip. analyzers — see also combustion equip., radiation equip,, and polarographic equip. —46LG anemometers—54LG anerobic culture apparatus aniline point apparatus — see petroleum testing equip. animal cage washing machine animal cages aprons, laboratory arc resistance tester ashers, low temperature asphalt testing equip, atomic absorption equip, atomic fluorescence autoclaves and accessories automatic testing equip.
Β balance covers balance dish balance illuminators balance tables balances, weights and access. 54LG barographs barometers baths—64LG batteries battery chargers beakers — see glassware bell jars — see glassware
LABORATORY GUIDE
benches, optical benches, tables and desks, laboratory — see furniture, laboratory binders —see chart binders birefringence measuring equip, bituminous testing equip. — see asphalt testing equip. blenders blenders, gas blood testing equip, boats — see combustion equip. boiling point apparatus boiler water testing equip. ™ see water analysis equip. bomb calorimeters — see calorimeters bomb sampler ~ see petroleum testing equip. bonding equip. borescopes — see optical equip. bottles bottles, weighing boxes, light breathing equip. — see safety equip. brushes — see cleaning equip. burets and accessories—65LG burners and accessories
controllers, temperature — see chromatography, liquid-liquid temperature controllers chromatography microparticulate controls, cryogenic — see cryogenic bed—92LG equip. chromatography, paper—92LG contour measuring projectors chromatography, process control cooling devices — see also chromatography, radio — see also refrigerators radiation equip. chromatography» thin layer—94LG core analysis equip. chromoraeter — see petroleum testing corks — see stoppers corrosion test apparatus - - see equip. petroleum testing equip. chronographs — see timers coulombmeters circuit testers — see testers clamp and rod systems for glassware coulometers clamps countercurrent distribution classifiers apparatus counters— 114LG clean rooms & furniture couplings, pipe and tubing cleaning compounds, labware crucibles cleaning equip. — see also ultrasonic crushers, grinders, mills, pulverizers cleaning equip, and mercury and accessories cleaning equip. cryogenic equip.—118LG clothing, laboratory cryoscopes clothing, laboratory, disposable cryostats cloud and pour point apparatus — crystal growing apparatus see petroleum testing equip. crystals—-see also models, crystal— cloud chambers — see radiation equip. 116LG coal and coal by-product testing culture apparatus apparatus & accessories culture media coating equip, custom built devices for electricalcoatings—99LG nuclear industry cobalt sources — see radiation equip, cylinders — see also containers and cages, animal — see animal cages cold plates cans calculators collectors — see samplers and calibration samples — see radiation fraction collectors equip. collimators, automatic electrical calibration systems collimators, optical calibrators — see pressure calibrators color analyzers & accessories — see data handling systems — see and radiation equip. computers analyzers, color calorimeters and accessories—66LG colorimeters — see also petroleum data storage and readout equip, cameras—66LG decontamination services —see testing equip. cans — see containers and safety radiation equip. columns — see chromatography, equip, demineralizers — see water column capacitance measuring equip, purification equip. combustion equip, and a c c e s s . capacitance standards densitometers 102LG capacitors, high voltage storage densitometers, micro commutators carbon, activated densitometers, x-ray — see x-ray comparators — see colorimeters and carbon residue apparatus — see densitometers analyzers, color density gradient fractionator petroleum testing equip. comparators, optical density measuring equip. carboys — see chemical handling comparators, plate density detectors, gas — see equip. computer analytical systems carts, laboratory detectors, gas density computers and access.—106LG casseroles desiccators condensers and accessories desks — see furniture, laboratory catalytic reaction apparatus conductivity bridges detectors—119LG cathetometers conductivity equip, dew point determinators cells connectors, tubing Dewar flasks — see containers, low cement testing equip. — see also soil containers and cans — see also testing equip. temperature, cryogenic equip,, cylinders cements and flasks, Dewar containers, low temperature — see dialyzers centrifuges and access.—80LG also flasks, Dewar ceramicware — see also glassware and containers, sample dielectric measuring equip, plasticware diffraction gratings — see also containers, shielded — see radiation chart binders spectrometers equip. chart editors diffraction, x-ray contamination testing apparatus — chart supplies diffraction, x-ray programmers see petroleum testing equipcharts, periodic diffraction equip., electron control, frequency indicator charts, recording dilatometers control systems — see also electronic chemical handling equip, diluters, automatic controls chlorine testing equip. — see also diodes — see tubes, electronic controllers, liquid level — see liquid dipole moment measuring equip, water analysis equip. level controllers disks and plates, optical — see chromatography, column—80LG controllers, p H — see hydrogen ion chromatography, g a s — see also optical disks apparatus disks, x-ray — see x-ray disks fraction collectors—8ZLG controllers, pressure — see pressure dishes — see also glassware, chromatography, liquid — see also controllers plasticware, ceramicware fraction collectors—90LG disintegrators ·— see ultrasonic equip.
AUGUST 1974 31 LG
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dispensers — see filling and dispensing equip. distillation equip.—122LG dosimeters — see radiation equip. dosimetry service — see radiation equip. dry boxes — see also glove boxes dry ice storage cabinets — see also refrigerating equip. dryers — see also ovens dryers, gas drying apparatus and accessories — see also ovens & air dryers dust bellows dust boots dust covers dust-free cabinets
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ebulliometers electrical & electronic wire hardware electrical testing equip. — see also ammeters, voltmeters, conductivity equip., oscilloscopes, etc. electrodes—124L G electrodes, pH—126LG electrodes, specific ion electrofocusing apparatus and supplies electrolysis apparatus electromagnets — see also magnets electrometer calibration unit electrometers — see hydrogen ion apparatus and radiation equip. electron guns electron paramagnetic resonance equip, electron spin resonance equip, electron spectrometers — see spectrometers, electron electronic and radio parts — see radio and electronic parts electronic controls and components electrophoresis, cellulose electrophoresis, liquid electrophoresis, paper—128LG electrophoresis apparatus—128LG electrophoresis destaining equip, electrophoresis equip. & accessories electroscopes ellipsometers emulsifiers — see stirrers equilibrium dialysis system equipment, leasing and renting evaporating dishes — see dishes evaporators evaporators, flash evaporators, rotary film extraction apparatus and accessories eyewash fountains — see safety equip.
fans for laboratory use fermentation equip. fibers, ceramic filaments, hot wire — see heaters filling and dispensing equip. film—130LG filter papers filter powder filter presses filter pulp filtering equip, and aids — see also funnels, filter filters—132LG finishing equip. — see polishing equip. fire equip. — see safety equip. fittings, tube — see tube fittings fixtures, laboratory — see furniture, laboratory flammable liquid storage cabinets — see safety equip. flash photolysis — see photolysis, flash flash point tester — see petroleum testing equip. flask heaters — see heating mantles flasks flasks, De war flicker fusion test apparatus flotation machines, laboratory flow meters flow meters, gas flow meters, liquid fluorescence, atomic — see atomic fluorescence fluorescence meters & accessories
32 LG AUGUST 1974
fluorescent instruments fluorescent substances fluorometers, photo & accessories fluorometers, spectro flux meters foil, metal foil, metal, ultra-thin foils, neutron activation — see radiation equip. forceps fountains, eyewash — see safety equip. fraction collectors & accessories fraction collectors, gas fraction collectors, liquid fraction collectors, refrigerated fractionator, density gradient — see density gradient fractionator fractionators, countercurrent fractionators, polymer extractors freeze dryers freezers freezing point apparatus frequency converters frequency, high, puiser frequency standards friction testing equip, fuel cells & accessories fume hoods — see hoods funnels funnels, filter funnels, separatory furnaces—140LG furniture, laboratory—142LG
gages—144LG galvanometers gamma sources — see radiation equip. — 146LG gas analysis apparatus — see alsyzers, gas gas detectors — see radiation equip. & detectors gas masks — see safety equip. gas permeability testers — see testers gaskets — see sealing devices gaussmeters — see also spectrometers, NMR gauze, wire — see wire cloth Geiger tubes — see radiation equip. generators — see also radiation equip.~ 146LG glass joints, ground glass rod and wool glass working equip, glassware — see also ceramicware, plasticware, microchemical glassware & quartzware glassware, custom glassware cleaners & detergents — see cleaning compounds gloss meters — see paint testing equip. glove boxes gloves — see safety equip. goggles — see safety equip. & clothing, laboratory, disposable goniometers — see x-ray equip. graduates — see cylinders graphite products — see also electrodes, graphite gratings — see also spectrometers & monochromators grease working equip. —see petroleum testing equip. greases — see sealants grinders — see crushers grinders, impact — see ultrasonic equip. grinding machines & wheels — see also stirrers & mixers gum content apparatus — see petroleum testing equip.
H halogen determination apparatus — see petroleum testing equip. handling systems, integrated circuit heat flow instruments heat indicating devices (crayons, paints, etc) — see also thermometers heat transfer devices heaters, heating elements & accessories — see also hot plates heaters, infrared heaters, immersion heating mantles—150LG heating tapes
homogenizers hoods & accessories hot plates — see also heaters humidifiers humidity cabinets humidity indicators, controllers, recorders — see individual listings hydrocarbon analyzers — see combustion equip. hydrogen analyzers — see com bustion equip. hydrogen flame igniter hydrogen ion apparatus — see also electrodes, pH— 150LG hydrogénation apparatus hydrometers hygrometers hy grothermogr a p hs
I impedance bridges incubator rooms incubators indicators—152LG inductance bridges infrared cells — see cells, UV and IR infrared sources — see lamps & light sources, infrared integrator chart integrators — see radiation equip. integrators, current integrators, digital interferometer ion exchange apparatus ion exchange columns ion exchange columns ion exchange membranes ion pumps — see radiation equip. ion sources — see radiation equip. ionization chambers — see radiation equip. irradiation equip., gamma — see radiation equip. isotope containers — see radiation equip. isotope laboratory equip. — see radiation equip.
McLeod gages melting point apparatus and accessories — see also petroleum testing equip. membranes — see filters mercury cleaning equip, and service mercury diffusion mesh, wire — see wire cloth metallographic equip, metallurgical apparatus metals, porous material meters — see also hydrogen ion apparatus, pH; and detectors, * radi'oactiue—162LG microchemical analysis apparatus microchemical glassware microforge micrometers microprobe electron — see microscopes microprobes, laser microprobes, x-ray micro scale equip. — see individual items microscope illuminators — see microscopes microscopes & access.—164LG microsoldering equip, and supplies microtomes and access.—166LG microwave equip, milk testing apparatus mills — see crushers mirrors mirrors, galvanometer mixers — see also stirrers mixers, gas models — atomic, molecular, crystal structure models, stereo, molecular models, student molecular moisture determination apparatus — see also analyzers, moisture molecular weight apparatus monitors and controllers—168LG monochromators monochromators, scanning monostats — see pressure devices mortars and pestles Mossbauer spectrometers—170LG multipliers, analog multipliers, electron
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κ kettles, reaction kilns—154LG Kjeldahl apparatus, macro Kjeldahl apparatus, micro
label marking devices labels laboratory rooms lamps and light sources—156LG laser systems and accessories lasers, applied—158LG lasers, dye products—158LG lasers, laboratory type—158LG lead shields — see radiation equip. lenses lenses, IR liquid level controllers liquid scintillation counting systems — see radiation equip. low temperature equip. — see containers, flasks and flasks, Dewar lubricants, dry-film lyophilization products — see freeze dryers
M machines, take-off and cut-off saws for plastics, hose, wire and cable magnetic susceptibility apparatus magnets, magnet systems & accessories — see also electromagnets magnets, superconducting magnifiers and accessories manipulators — see also radiation equip. manometers — see also gages markers — see also pencils, marking
nephelometers neutron sources and generators — s radiation equip. nitrogen determination apparatus
ohm meters optical components, infrared, military optical disks & plates optical elements, plastic optical equip., borescopes, periscopes, telescopes — see also benches, optical optical lenses optical testing equip. oscillators— 172LG oscillographs oscillographs, direct writing oscillometers oscilloscopes & accessories oscilloscopes & accessories, multichannel osmometers—172LG ovens—172LG oxidation apparatus — see petroleum testing equip. oxygen bombs — see calorimeters ozone synthesis
packing — see sealing devices paint testing equip. paper & pulp testing equip. paper, recording particle concentration measurement instruments particle size apparatus particle size material—174LG pencils, marking — see also markers penetrometers •— see petroleum testing equip. peroxide bombs — see calorimeters pestles — see motars and pestles petroleum testing equip.—174LG LABORATORY
GUIDE
pH comparators, controllers, meters, standards — see hydrogen ion apparatus pH electrodes — see electrodes, pH pH test papers — see test papers, pH, quaternary phase resolver phosphate testing equip. — see water analysis equip. phosphorus scintillators — see radiation equip. photochemical reactors — see radiation equip. photoelectron spectroscopy photofluorometers — see fluorometers photographic equip. — see also film, photographic photolysis, flash—178LG photometers—178LG photographic interpretation equip, photosensitive devices pilot plant synthesis pipe & tubing — see tubing & pipe pipets & accessories—180L G plastic tape plastic testing equip, plasticware platinum products — see precious metalware point source lamps — see lamps & light sources, point source polarimeters—180LG polariscopes polarographic equipment & accessories polishing equip. — see also abrasiues pollution instruments — seeparticle size apparatus; samplers, air& water analysis equip. polyethyleneware — see plasticware polypropyleneware — see plasticware polystyreneware — see plasticware porcelain ware porosimeters porous metal materials — see metals potassium lamps — see lamps & light sources, sodium & potassium arc potentiometers — see also hydrogen ion apparatus potentiostats powder classification equip. — see particle size apparatus power supplies—182LG precious metalware — see also wire, precious metal presses, laboratory pressure calibrators pressure chambers pressure controllers pressure devices — see also pumps pressure reaction apparatus — see also calorimeters prisms process control equip. — see chromatography, process control & various headings under analyzers programmers—186LG projectors proportional counters — see radiation equip. pulp testing equipment — see paper &pulp testing equip. pulse generators — see radiation equip. pulse height analyzers — see radiation equip. pulverizers — see crushers pumps—186LG purifiers—190LG pycnometers pyrometers—190LG
quartz cement quartz, fiber, yarn and wool quartzware — see also tubing, quartz
radiation equipment—192LG radio and electronic parts
LABORATORY
GUIDE
radioactivity monitors — see radiation equip., monitors and counters, particle radiochromato graphs radiography equip, radiometers ratemeters — see radiation equip. reaction systems—204LG reactors reagent dispensers recorders—204LG recording spectrophotometers — see spectrometers, recording rectifiers — see power supplies refiners, zone reflectometers — see analyzers, color refractometers & accessories — see also analyzers, continuous flow refractories — see also combustion equip. refrigerators & refrigerating equip, refrigerators, cryogenic — see cryogenic equip. regulators—208LG relays—210LG remote handling & viewing devices — see radiation equip. resistance bridges & standards respirators — see safety equip. retorts rheometers ring & ball apparatus — see asphalt testing equip. rings rods, quartz rotators — see shakers rubber testing equip.
saccharimeters safety equip. — see also combustion equip., oxidizer analyzers; radiation equip.—210LG sample changers — see radiation equip. samplers—211LG scalers — see radiation equip. scales — see balances scitillation counters — see radiation equip. scitillators — see radiation equip. screens, vibrating — see vibrating screens screens, wire — see wire cloth scrubbers, fume, for laboratory use sealants & greases — see also vacuum sealants sealing devices semiconductor devices sensors, temperature separators, isotope — see radiation equip. shakers—211LG shielding — see radiation equip. showers — see safety equip. sieves—212LG signal averager silicaware sinks — see furniture, laboratory slide rules (including chemical) soil testing equip, solvent extraction equip, spatulas specific gravity apparatus — see balances, specific gravity & densitometers spectra, IR, UV, near IR spectral reference charts spectrogram binders — see chart binders spectrometers and access. — 212LG spectrophosphorimeters spectropolari meters & accessories spectropolarimeters, recording spectroradiom eters spectroscopes spectroscopic electrodes standards—214LG static & electrostatic measurements static eliminators sterilizers—215LG stirrers—215LG stopclocks — see timers
stopcocks stoppers & corks stopwatch — see timers storage cabinets — see refrigerating equip. storage cabinets, flammable liquid — see safety equip. storage chambers, plasma sublimation equip, sublimators, micro sulfur analyzers — see combustion equip. sulfur apparatus — see coal & coal by-product testing apparatus & petroleum testing equip. supports surface area apparatus surface tension apparatus survey meters — see radiation equip. switches, electric synthesis equip., automated syringe drive syringe mounts syringes—216LG
tables — see furniture, laboratory; balance tables; concentrating tables; & photographic interpretation equip. tachometers — see timers tape — see also heating mantles & tapes, plastic tape, computers & accessories tape, recording telemetering systems telescopes — see optical equip. telescopic instruments television, scan converter temperature controllers temperature probes tensiometers test chambers, environmental — 217LG test equip., automatic test papers, pH, quaternary test rooms test stands—217LG test tube closures test tube mixers test tube racks test tubes — see tubes, test testers—217LG tetraethyllead apparatus — see petroleum testing equip. thermal analyzers — see analyzers, differential thermal thermistors thermocouple reference junctions thermocouples — see also wire, thermocouple thermogravimetric analysis equip. thermometers—218LG thermostats thermostats, circulating thickness measuring equip. timers, chronographs, stopwatches, stopclocks, tachometers timers, elapsed time timers, gelation tissue choppers tissue culture apparatus tissue embedding materials tissue processing equip., automatic titration apparatus, automatic titrators—220LG tongs tracers, curve, transistor and/or tube transducers—220LG transformers — see power supplies transistors traps, cold trays tritium monitors — see radiation equip. tube fittings tubes—221LG tubing & pipe, general — see also tube fittings & specific types of tubing tubing—221LG
turbidimeters — see also analyzers, turbidity turbidity analyzers — see analyzers, turbidity & photometers, turbidity
υ ultracentrifuges — see centrifuges ultramicrotomes — see microtomes ultrasonic equipment—222LG ultraviolet equip. — see also cells, UV; crystals; detectors, UV; lamps & light sources, UV; spectra, UV; analyzers, continuous flow ultraviolet equip., absorptiometers
vacuum — see also balances; furnaces; gages; ovens; pumps; and valves—223LG vacuum evaporation & access. — 224LG vacuum production systems—224LG valves—224LG vapor pressure apparatus — see petroleum testing equip. vibrating screens vibration testing equip, vibrators vibrators, anti-mounting platforms viscometers — see also petroleum testing equip. viscosity baths — see petroleum testing equip. voltage converters voltage dividers voltage reference sources, variable voltmeters, AC—226LG voltmeters, DC—226LG
w Warburg apparatus & access. — 226LG washers, laboratory, automatic washing equip. — see cleaning equip. water analysis equip, water chillers water pollution analysis apparatus water purification & treatment equip, water stills weights — see balances welders & equipment, high precision—227LG Wheatstone bridge wire (including thermocouple, precious metal, resistance) wire, superconducting wire cloth, mesh, screen, & gauze
x-ray counting systems x-ray densitometers x-ray diffraction accessories x-ray diffraction cameras x-ray diffractometers x-ray disks x-ray equipment (except tubes) also spectrometers, x-ray x-ray film — see film, x-ray x-ray fluorescence x-ray image intensifiers x-ray sources, monochromatic
zone refiners — see refiners, zone
AUGUST 1974 33 LG
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Instruments and Equipment ABRASIVES Agrasheil, inc. American Optica! Corp, (Mass.) Aremco Products, Inc. Aîomergic Chemetals Co. Sorden Chemical. Resins and Chemicals Div. Buehler Ltd. The Carborundum Co.. Abrasives Marketing Div. The Carborundum Co., Pangborn Div, E. i. du Pont de Nemours & Co., inc. Edmund Scientific Co. FEDESCO Fish-Schurman Corp. Flortdin Co. GEOS Corp. Humphreys Corp. Johns-Manviile Leco Corp. Materials Development Corp. Merix Chemical Co. Metex Corp. Ν L Industries. Inc., Tam Div Norton Co. {Mass) Raytheon Co., Industrial Electronics Dept. TheSei-RexCo. SQL Abrasives Tam Div. Union Carbide Corp,, Materials Systems Div. VAR-LAC-OID Chemical Co. Wale Apparatus Co,
ABSORPTION SPECTRA CHARTS(REFERENCE) Aldrich Chemical Co., Inc, Beckman Instruments, Inc. Japan Spectroscopic Co.. Lid. MC/B Manufacturing Chemists Perkin-Elmer Corp. Sadtler Research Laboratories, Inc. Shirnadzu Seisakusho, Ltd.
ACID HANDLING EQUIPMENT — see also chemicai handling equipment Bel-Art Products Β I F
Blue White Industries The Carborundum Co., Graphite Products Div. {Ohio) CarpartCorp. Celanese Piping Systems, Inc. Chemcon, inc. Creco, inc. The Duriron Co., Inc. FEDESCO Filterchem Corp. Fisher Scientific Co. Fluid Metering, Inc. The Fluorocarbon Co, Geîber Pump Co. General Scientific Equipment Co. Greiner Scientific Corp. Heii Process Equipment Corp, Hills-McCanna Hruden Laboratory Products JAECo Pump Co. Kralt Apparatus, Inc, Labconco Corp. Labindustries Mallinckrodt Chemicai Works, Science Products Div. Mallinckrodt Chemical Works. Plastics Div, Manostat Corp. Mission Manufacturing Co. Nalge Co. Nalgene Industrial Div. Norcross Cos. Norton Co.. Metals Div, Fred Portz Jr. Associates
LABORATORY GUIDE
Research Appliance Co. Scientific Specialties Service, inc. SERFILCO Sethco Manufacturing Corp. Shirnadzu Seisakusho, Ltd. Thompson Hayward Chemicai Co, Uirich Manufacturing Co. Vanton Pump & Equipment Corp.
ACOUSTIC EQUIPMENT — see also spectrometers, acoustical AeroVironmeni. inc, American Vector, Inc. The Bendix Corp. Brunswick Corp. Electro Optical industries. Inc. General Radio Co. Hewlett-Packard Co., (Caiif.) industrial Acoustics Co., inc. interOcean Systems, Inc. NametreCo. Newark Wire Cloth Co. W. F. Sprengnether Instrument Co.. Inc. Sundstrand Data Control, Inc. Wyie Labs.
ADSORPTION GAS APPARATUS Barnebey-Cheney Cah'n Instruments Carpart Corp. Coast Engineering Laboratory CRYENCO Hoyt Mfg. Corp. Hruden Laboratory Products Quantachrome Corp. Vic Mfg.Co. Wheaton Scientific
AIR CLEANERS American Air Filter Co., Inc. Amsco Industrial Co. Atlantic Ultraviolet Corp. Baird-Atomic, Inc. Balston. Inc. Barnebey-Cheney Brunswick Corp. Cambridge Filter Corp. Carpart Corp. Controlled Atmosphere, Inc. Creco,Inc, Emerson Electric Co.. White-Rogers Div, ENVIRCO, inc. f arr Co. Forest Scientific, Inc, Heat Systems-Ultrasonics, Inc. Heif Process Equipment Corp. Honeywell, Inc.. Residential Div. Hruden Laboratory Products Ionics, inc. Johns-Manviile Ksnîex, Inc. Liberty Industries, inc. Master Appliance Corp. Maxon Corp. Metex Corp. MikroPul Div. Poliutronics, Inc, Research Products Corp, Reuter-Stokes Canada, Lid. Schutîe and Koerting Co. Schwitzer Div. Scientific Systems Corp. Sefas Corp. of America SERFILCO Sherwood Medical industries. Inc. Trt-Mer Corp.
AIR DRYERS Adtech Associates, Inc. Amsco Industrial Co.
Analabs, Inc. Automatic Pump & Equipment Co. Balston, Inc. Barnebey-Cheney Bench Scale Equipment Co. Carpart Corp. Coast Engineering Laboratory Controlled Atmosphere, inc. Creco. Inc. Deltech Engineering, Inc. Carlo ErbaS.p.A. FEDESCO Fisher Scientific Co. Fiuid Energy Processing & Equipment Go. Gast Mfg. Corp. Gelman Instrument Co. General Cable Corp. W. A. Hammond Drîeriîe Co. Hankison Corp. Hotpack Corp. Hruden Laboratory Products industrial Systems Corp. Intertech Corp. Ion Exchange Products, Inc. dapan Spectroscopic Co., Ltd. Jeirus instrument Corp. Joy Manufacturing Co. Kahn& Co., Inc. King Engineering Corp. L & R Manfacturing Co. Lectrodryer Maxon Corp. Niagara Blower Co, Nuclepore Corp. Pall Trincor Corp. Pall Trinity Micro Corp. Pfaltz & Bauer, Inc. Scientific Systems Corp. SERFILCO Supelco, Inc. Vacuum/Atmospheres Corp. WeatherMeasure Corp. Edwin L. Wiegand
AIR SAMPLING AND ANALYSIS EQUIPMENT Ace Glass, Inc. Aero Vac Corp, Alnor Instrument Co. American Instrument Co. ' Analytical Instrument Development, Inc. Andros, Inc. Atomic Products Corp. Baird-Atomic, Inc. Barnebey-Cheney Baroid Div. Beckman Instruments, inc. Bel-Art Products Betz Laboratories, Inc. BGL inc. Burreli Corp. Cahn Instruments Calibrated instruments, inc. Carle Instruments. Inn. CEÀ Instruments Chaîas Glass Co. Cltmet Instruments Co. Controlled Environment Equipment Corp. Coulter Electronics, Inc. CRYENCO Curtin Scientific Co. Custom Glassblowing Service CVC Products, Inc. Dasibi Environmental Corp. Del Electronics Corp. DEVCO Engineering, Inc. Digiiab, Inc. DOHRMANN Div. Envirqfech Corp. E. i. du Pont de Nemours & Co., Inc. Dynasciences Corp, Eberiine instrument Corp. EG&G Environmental Equipment Div. EG&G Inc., Technical Products Group E.O.C.O.M. Carlo ErbaS.p.A. Erdco Engineering Corp. Extranuclear Labs., Inc. F& J Scientific Finnigan Corp. Fluid Metering, Inc.
2
GCA/Precision Scientific GCA Technology Div. Gelman Instrument Co. Generai Electric Co,. Analytical Measurements Greiner Scientific Corp. R.J. Harvey Instrument Corp. The Hays Corp. Housîon-Aiias, Inc. Hruden Laboratory Products INAX Instruments Ltd. International Biophysics Corp. intertech Corp. ITT Barton KahJ Scientific instrument Corp, Konies Kontes/Martin, inc. Koslow Scientific Co. Land Instruments, Inc. Leeds & Northrup Co. Lovibond of America, Inc. McMillan Electronics Corp. McPherson instrument Corp, MDA Scientific, Inc, Millipore Corp. Mine Safety Appliances Co. MISCO Scientific Monitor Labs., Inc, Monsanto Co,
See the WiLKS SCIENTIFIC air sampling and analysis ad on page 47 National Environmental Instruments Inc. National Instrument Laboratories, Inc. New Brunswick Scientific Co., Inc. Nuclear Equipment Chemical Corp. Nuclear Measurements Corp. Nuclepore Corp. Nuclide Corp. Olson Laboratories, Inc, Perkin-Elmer Corp. Philips Electronic Instruments, Inc, Power Designs Inc, Precision Sampling Corp, Process Analyzers, fnc. Research Appliance Co. Royco Instruments, Inc. Schmidt Instrument Co. Scientific Glass & Instruments, Inc. Scientific Industries, inc. Scott Aviation Scott Research Laboratories, Inc. Shirnadzu Seisakusho, Ltd. Sierra Instruments, fnc. SoitecCoVp. Spectra! Imaging, Inc. Specîro Products, inc. The Stapiex Co. Sunshine Scientific Technicon Industrial Systems Teîedyne Analytical Instruments Teledyne Isotopes (N-J-) Thermo-Systems, Inc, Arthur H. Thomas Go. Tracer, Inc. United Technical Corp, Uihe Technology international Varian Vacuum Div. WeatherMeasure Corp, Wheaton Scientific Wilkens-Anderson Co. Wilks Scientific Corp.
ALARM SYSTEMS IR Artisan Electronics Corp. Barries Engineering Co, Block Engineering, Inc. DEVCO Engineering. Inc,
AUGUST 1974 41 LG
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ALARM SYSTEMS AMPLIFIERS Land Instruments, Inc. Photobell Co., Inc. Systron-Donner Corp. Thermonetics Corp.
thermal Atkins Technical, Inc. Barnes Engineering Co. Block Engineering, Inc. Fenwal Inc. Haake, Inc. Heath/Schlumberger Instruments Kaye Instruments, Inc. Materials Development Corp. Pak-Tronics, Inc. Simpson Electric Co. Systron-Donner Corp. Telmar, Inc. Thermonetics Corp. Utopia Instrument Co. WeatherMeasure Corp.
The Duriron Co., Inc. Engelhard Minerals & Chemicals Corp., Engelhard Industries Div. Goodfellow Metals Ltd. Kawecki Berylco Industries, Inc. Kennametal Inc. Molectrics, Inc. MSA Research Corp. Ney Metals, Inc, Ν L Industries, Inc., Metal Div. Ν L Industries, Inc., Tarn Div. Nuclear Materials & Equipment Corp. Research Chemicals Semi-Elements, Inc. Stellite Div. Technics, Inc. Union Carbide Corp., Ferroalloys Div. Union Carbide Corp., Mining & Metals Div. United Mineral & Chemical Corp. VAR-LAC-OID Chemical Co. V Κ Enterprises, Inc.
AMMETERS TV Atlantic Research Corp. Colorado Video, Inc. Jackson & Church Electronics Co.
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ALARMS, temperature Almac Cryogenics, Inc. Alnor Instrument Co. Ametek/U.S. Gauge Associated Electrical Industries International Ltd. Athena Controls, Inc. Atkins Technical, Inc. Barber-Colman Co. C-E INVALCO Chatham Controls Corp. Climatronics Corp. CML-Macarr, Inc. Cryogenic Technology, Inc. Curtiss Engineering & Research Doric Scientific Corp. Elnik Instruments, Inc. Esterline Angus Fenwal Inc. Fisher Scientific Co. The Foxboro Co. Haake, Inc. H-B Instrument Co. Heath/Schlumberger Instruments Honeywell, Inc., Process Control Div. Hy-Cal Engineering Instrulab, Inc. Instruments For Research & Industry Intertech Corp. Kahl Scientific Instrument Corp. Kaye Instruments, Inc. Leeds & NorthrupCo. LFECorp. Luft Instruments, Inc. Materials Development Corp. Metrix Instrument Co. Non-Linear Systems, Inc. Pak-Tronics, Inc. Phase Separations Ltd. Research Appliance Co. REVCO, Inc. RFL Industries, Inc. Rosemount, Inc. Rustrak Instrument Div. Shimadzu Seisakusho, Ltd. Simpson Electric Co. Systron-Donner Corp. Telmar, Inc. Tenney Engineering, Inc. Thermo Electric Co., Inc. Theta Instrument Corp. United Technical Corp. Utopia Instrument Co. WeatherMeasure Corp. West Instrument Yellow Springs Instrument Co., Inc.
ALKALIMETERS Beckman Instruments, Inc. Fisher Scientific Co. Greiner Scientific Corp. Lab Glass, Inc. The London Co. Mercer Glass Works, Inc. Owens-Illinois. Inc. SGA Scientific Inc.
Amprobe Instrument A.R.F. Products, Inc. Artronix, Inc. Bristol Div. of Acco Curtrn Scientific Co. Dranetz Engineering Labs., Inc. Dynascan Corp. The Ealing Corp. Electro Scientific Industries, Inc. Engelhard Minerals & Chemicals Corp., Engelhard Industries Div. Epic, Inc. Esterline Angus Gencom Div. General Electric Co. Heath/Schlumberger Instruments Hewlett-Packard Co., (Calif.) The Hickok Electrical Instrument Co. Κ. Η. Huppert Co., inc. Keithley Instruments, Inc. Kratos LFECorp. Newport Labs., Inc. Pye Unicam Ltd. RCA Electronic Components Sargent-Welch Scientific Co. Shimadzu Seisakusho, Ltd. Simpson Electric Co. Sunshine Scientific Telmar, Inc. Triplett Corp. Weston Instruments, Inc.
AMMETERS, log micro Heath/Schlumberger Instruments Keithley Instruments, Inc. LFECorp. Simpson Electric Co. Sunshine Scientific
AMMETERS,micro Amprobe Instrument Artronix, Inc. Βίο-Optronics, Inc. Ducon Instruments, Inc. Elcor Electro Scientific Industries, Inc. Esterline Angus Farrand Optical Co., Inc. Gencom Div. General Electric Co. Hewlett-Packard Co., (Calif.) The Hickok Electrical Instrument Co. Κ. Η. Huppert Co., Inc. Keithley Instruments, Inc. Kratos LFECorp. Nuclide Corp., AGV Div. Pacific Photometric Instruments Princeton Applied Research Corp. Pye Unicam Ltd. RCA Electronic Components Rohde& Schwarz Sales Co. (USA) Inc. Sargent-Welch Scientific Co. Simpson Electric Co. Sunshine Scientific Telmar, Inc. Triplett Corp. Weston Instruments, Inc.
AMPLIFIERS
ALLOYS, special
AC
Airco, Inc. Aremco Products, Inc. Atomergic Chemetals Co. Brammer Standard Co. Carpenter Technology Corp. Cerac, Inc.
Advanced Dynamic Instruments American Vector, Inc. Analog Devices, Inc. Associated Electrical Industries International Ltd. Bell & Howell
42 LG AUGUST 1974
Bristol Div. of Acco C-COR Electronics, Inc. CML-Macarr, Inc. Corion Instrument Corp. Elgar Corp. General Devices, Inc. General Radio Co. Gulton Industries, Inc. Harvard Apparatus Co , Inc. Heath/Schlumberger Instruments Hewlett-Packard Co., (Calif.) Honeywell Test Instruments Div. Instron Corp. International Light, Inc. Intronics, Inc. Itek Corp. Ithaco, Inc. Japan Spectroscopic Co., Ltd. Keithley Instruments, Inc. Leeds & Northrup Co. Melcor Electronics Corp. Milletron. Inc. Natel Engineering Co., Inc. Nuclide Corp. ORTEC Incorporated Power Control Corp. Princeton Applied Research Corp. Schaevitz Engineering Shimadzu Seisakusho, Ltd. Soltec Corp. Spectro Products, Inc. Sundstrand Data Control, Inc. Tektronix, Inc. Teledyne Philbrick Telmar, Inc. Transidyne General Corp. Trio Laboratories, Inc. Tronac, Inc. Waters Instruments, Inc.
Hewlett-Packard Co., (Calif.) Honeywell Test Instruments Div. Intronics, Inc. Ithaco, Inc. Keithley Instruments, Inc. McKee-Pedersen Instruments Melcor Electronics Corp. Newport Labs., Inc. Nuclide Corp. Princeton Applied Research Corp. Raytheon Semiconductor Schaevitz Engineering Shimadzu Seisakusho, Ltd. Soltec Corp. Sprague Electric Co. Stanton Redcroft Tektronix, Inc. Teledyne Philbrick Transidyne General Corp. Trio Laboratories, Inc. Waters Instruments, Inc. Westinghouse Electric Corp., Computer & Instrumentation Div.
differential comparator Analog Devices, Inc. Analog Technology Corp. Burr Brown Research Corp. Intronics, Inc. Ithaco, Inc. McKee-Pedersen Instruments Natel Engineering Co., Inc. Nuclide Corp. Raytheon Semiconductor Soltec Corp. Tektronix, Inc. Teledyne Philbrick Trio Laboratories, Inc.
DC electronic Analog Devices, Inc. Analog Technology Corp. Arenberg Ultrasonic Lab., Inc. Associated Electrical Industries International Ltd. Baird-Atomic, Inc. Β & F Instruments, Inc. Beckman Instruments, Inc. Bell & Howell Biotronex Lab.. Inc. Burr Brown Research Corp. C-COR Electronics, Inc. Chemtronics, Inc. Dana Labs, Inc. Ectron Corp. Gencom Div. General Devices, Inc. General Rand Corp. Gould, Inc., Instrument Systems Div. Gulton Industries, Inc. Harvard Apparatus Co., Inc. Hathaway Industries Heath/Schlumberger Instruments Hewlett-Packard Co., (Calif.) Honeywell, Inc., Process Control Div. Honeywell Test Instruments Div. International Light, Inc. Intronics, Inc. Itek Corp. Japan Spectroscopic Co., Ltd. Keithley Instruments, Inc. Leeds & Northrup Co. Melcor Electronics Corp. Milletron, Inc. Newport Labs., Inc. Nuclide Corp. Pak-Tronics, Inc. Power Control Corp. Princeton Applied Research Corp. Pye Unicam Ltd. Schaevitz Engineering Shimadzu Seisakusho, Ltd. Soltec Corp. Statham Instruments, Inc. Sundstrand Data Control, Inc. Tektronix, Inc. Teledyne Philbrick Telmar, Inc. Tracor, Inc. Tracor Northern, Inc. Transidyne General Corp. Trio Laboratories, Inc. Waters Instruments, Inc. Westinghouse Electric Corp., Computer & Instrumentation Div.
AEL, Inc. American Vector, Inc. Amperex Electronic Corp. Analog Devices, Inc. Analog Technology Corp. Associated Electrical Industries International Ltd. Babcock & Wilcox Co., Automated Machine Div. Beckman Instruments, Inc. Bell & Howell Browmar Labs., Inc. Burr Brown Research Corp. C-COR Electronics, Inc: CML-Macarr, Inc. Dana Labs, Inc. General Devices, Inc. Gilmore Industries, Inc. Gulton Industries, Inc. Hathaway Industries Heath/Schlumberger Instruments Hewlett-Packard Co., (Calif.) Honeywell Test Instruments Div. Itek Corp. Ithaco, Inc. Keithley Instruments, Inc. Leeds & Northrup Co. McKee-Pedersen Instruments Mech-Tronics Nuclear Melcor Electronics Corp. Natel Engineering Co.. Inc. Nuclide Corp. The Ohmart Corp. ORTEC Incorporated Power Control Corp. Princeton Applied Research Corp. Pye Unicam Ltd. Raytheon Semiconductor Schaevitz Engineering Shimadzu Seisakusho, Ltd. Spectro Products. Inc. Sprague Electric Co. SSR Instruments Co. Statham Instruments, Inc. Sundstrand Data Control, Inc. Tektronix, Inc. Teledyne Philbrick Telmar, Inc. Tracor Northern, Inc. Transidyne General CQrp. Trio Laboratories, Inc. Tronac, Inc. Victory Engineering Corp. Watkins-Johnson Co.
differential
fluid
Analog Devices, Inc. Analog Technology Corp. Β & F Instruments, Inc. Bell & Howell Biotronex Lab,, Inc. Burr Brown Research Corp. C-COR Electronics, Inc. Gould, Inc., Instrument Systems Div. Harvard Apparatus Co., Inc. Hathaway Industries
Corning Glass Works Gagne Associates, Inc. United Electric Controls Co.
linear Amperex Electronic Corp. Analog Devices, Inc.
LABORATORY GUIDE
AMPLIFIERS, linear AMPLIFIERS, transducer and strain gage
Ε
Analog Technology Corp. Baird-Atomic, Inc. Beckman Instruments, Inc. Bell & Howell Burr Brown Research Corp. Canberra Industries, Inc. C-COR Electronics, Inc. CML-Macarr, Inc. Durrum Instrument Corp. Ectron Corp. Electronic Navigation Industries, Inc. Gould, Inc., Instrument Systems Div. Harshaw Chemical Co., Crystal & Electronic Products Dept. Hewlett-Packard Co., (Calif.) Honeywell Test Instruments Div. INAX Instruments Ltd. Itek Corp. Ithaco, Inc. Wm. B. Johnson & Associates, Inc. Keithley Instruments. Inc. Matec, Inc. McKee-Pedersen Instruments Mech-Tronics Nuclear Melcor Electronics Corp. Nuclear Data, inc. Nuclear Equipment Corp. Nuclide Corp, ORTEC Incorporated Power Control Corp, Princeton Applied Research Corp. PRD Electronics, Inc. Raytheon Semiconductor Schaevitz Engineering Soltec Corp. Spectro Products, Inc. Sprague Electric Co, Statham Instruments, Inc. Sundstrand Data Control, Inc. Teledyne Philbrick Teledyne Semiconductor Telmar, Inc. Tennelec, Inc. Westinghouse Electric Corp., Computer & Instrumentation Div.
α
lock-in type
2I C Ο
"5 σ LU TJ C (0
U2 c φ
Ε (Ο
c
Corion Instrument Corp. Electro Optical industries, Inc. International Light, Inc. International Pammcorp Ithaco, Inc. Japan Spectroscopic Co., Ltd. Keithley Instruments, Inc. ORTEC Incorporated Pacific Photometric Instruments Princeton Applied Research Corp. Spectro Products, Inc. SSR instruments Co.
logarithmic Analog Devices. Inc. Analog Technology Corp. Burr Brown Research Corp. Durrum Instrument Corp. Gould, Inc., Instrument Systems Div. Heath/Schlumberger Instruments Hewlett-Packard Co., (Calif.) International Light, Inc. Intronics, Inc. Itek Corp. ithaco, Inc. Keithley Instruments, Inc. Leeds & Northrup Co. McKee-Pedersen Instruments Melcor Electronics Corp. Milletron, Inc. Nuclide Corp. Pacific Measurements, inc. Princeton Applied Research Corp, Soltec Corp, Spectro Products, Inc. Tektronix, Inc. Teledyne Philbrick
low-level differential Analog Devices, Inc. Ectron Corp. Gould, Inc.. Instrument Systems Div. Harvard Apparatus Co,, Inc. Hathaway Industries Hewlett-Packard Co., (Calif.) Honeywell Test Instruments Div. Hy-Cal Engineering Intronics. Inc. Ithaco, Inc. Keithley instruments, Inc. Leeds & Northrup Co. McKee-Pedersen Instruments Melcor Electronics Corp. Natel Engineering Co., Inc. Nuclide Corp. Phipps & Bird, Inc. Princeton Applied Research Corp. Sensor Technology. Inc. Soltec Corp.
44 LG AUGUST 1974
Tektronix, Inc. Teledyne Philbrick Westinghouse Electric Corp., Computer & Instrumentation Div.
magnetic Analog Technology Corp. Associated Electrical Industries International Ltd. General Electric Co. Gulton Industries, Inc. Nuclear Research Corp. Sprague Electric Co. Westinghouse Electric Corp., Computer & Instrumentation Div.
multichannel American Vector, Inc. Biotronex Lab., Inc. Canberra Industries, Inc. Corning Glass Works Ectron Corp. Gould, Inc., Instrument Systems Div. Gulton industries. Inc. Hathaway Industries Hewlett-Packard Co.. (Calif.) Honeywell Test Instruments Div. INAX Instruments Ltd. Itek Corp. Ithaco, Inc. Nuclide Corp. Schaevitz Engineering Shimadzu Seisakusho, Ltd. Soltec Corp. Stoelting Co. Tektronix, Inc.
operational Analog Devices. Inc. Analog Technology Corp, Bell & Howell Burr Brown Research Corp. The Ealing Corp. Hewlett-Packard Co., (Calif.) Honeywell, Inc., Process Control Div. International Light, Inc. Intronics, Inc. Keithley Instruments, Inc. Kepco, Inc. McKee-Pedersen Instruments Melcor Electronics Corp. Nuclear Equipment Corp. Nuclide Corp. ORTEC Incorporated Princeton Applied Research Corp. Raytheon Semiconductor Shimadzu Seisakusho, Ltd. Soltec Corp. Sprague Electric Co. Tektronix. Inc. Teledyne Philbrick Tennelec, Inc. Westinghouse Electric Corp., Computer & Instrumentation Div.
peak limiting Nuclide Corp. Schaevitz Engineering Sensor Technology, inc. Soltec Corp.
physiological special purpose Beckman Instruments, Inc. Bio-Sentry Telemetry, Inc. Biotronex Lab.. Inc. Chemtronics. Inc. Gould, Inc., Instrument Systems Div. Harvard Apparatus Co.. Inc. Hewlett-Packard Co., (Calif.) Honeywell Test Instruments Div. Instrumentation Laboratory Inc. ORTEC Incorporated Phipps & Bird, Inc. Princeton Applied Research Corp. Soltec Corp. Statham Instruments, Inc. Stoelting Co. Tektronix, Inc. Teledyne Philbrick Transidyne General Corp. Vangard Systems, Inc.
power Advanced Dynamic Instruments AEL, Inc. American Vector, Inc. Amperex Electronic Corp.
Analog Devices. Inc. Beckman Instruments, Inc. Bruker Scientific. Inc. CML-Macarr, inc. Durrum Instrument Corp. Electronic Navigation Industries, Inc. Elgar Corp, Hewlett-Packard Co., (Calif.) Honeywell, Inc., Process Control Div, Itek Corp. Kepco, Inc. McKee-Pedersen Instruments Melcor Electronics Corp. Nuclide Corp. Power Control Corp. PRD Electronics, Inc. Shimadzu Seisakusho. Ltd. Sprague Electric Co. Teledyne Philbrick Tronac, Inc. Watkins-Johnson Co.
preamplifiers Advanced Dynamic Instruments AEL, Inc. American Vector, Inc. Analog Devices, Inc. Arenberg Ultrasonic Lab., inc. Baird-Atomic, inc. Beckman Instruments. Inc. Burr Brown Research Corp. Canberra Industries, Inc. C-COR Electronics, Inc. Chemtronics, inc. Durrum Instrument Corp. Electro Optical Industries. Inc. Electronic Navigation Industries, Inc. Elscint Inc. Extranuclear Labs., Inc. Gênerai Radio Co. Gould, Inc.. Instrument Systems Div. Harshaw Chemical Co., Crystal & Electronic Products Dept. Harvard Apparatus Co., Inc. Hathaway Industries Heath/Schlumberger instruments Hewlett-Packard Co.. (Calif.) Honeywell Test Instruments Div. InterOcean Systems, Inc. Itek Corp. ithaco. Inc. Japan Spectroscopic Co,. Ltd. Wm. B. Johnson & Associates, Inc. Keithley instruments, Inc. Leeds & Northrup Co. Mech-Tronics Nuclear Melcor Electronics Corp. Milletron, Inc. Nuclear Data, Inc. Nuclear Equipment Corp. Nuclide Corp. Optoelectronics, Inc. ORTEC incorporated Pacific Photometric Instruments Phipps & Bird. Inc. Princeton Applied Research Corp. Pye Unicam Ltd. Quinton Instruments Setaram Shimadzu Seisakusho. Ltd. Soltec Corp. Statham Instruments, Inc. Stoelting Co. Tektronix, Inc. Teledyne Philbrick Tennelec. Inc. Transidyne General Corp. Tronac. Inc. Watkins-Johnson Co.
pulse AEL, Inc. American Vector, inc. Analog Devices, Inc. Analog Technology Corp. Arenberg Ultrasonic Lab., Inc. Atlantic Research Corp. Baird-Atomic, Inc. Berkeley Nucleonics Corp. Bruker Scientific, Inc. Canberra Industries, Inc. C-COR Electronics, Inc. Datapulse Electronic Navigation Industries, Inc Elscint Inc. Extranuclear Labs., Inc. General Radio Co. Harshaw Chemical Co., Crystal & Electronic Products Dept. Hewlett-Packard Co.. (Calif.) Isomet Corp. Itek Corp. Ithaco, Inc. Wm. B. Johnson & Associates, Inc. Johnston Laboratories, Inc. Keithley Instruments, Inc. Matec, Inc. Milletron. Inc.
Nuclide Corp. ORTEC Incorporated Pacific Photometric Instruments PRD Electronics. Inc. Soltec Corp. Spectro Products, Inc. Sprague Electric Co, SSR instruments Co. Tennelec, Inc. Velonex
ratio recording Analog Devices, Inc. Durrum Instrument Corp. Esterline Angus Ithaco. Inc. Kernco Instruments. Inc. McKee-Pedersen Instruments McPherson Instrument Corp. Natel Engineering Co., Inc, Nuclide Corp. Princeton Applied Research Corp, Westinghouse Electric Corp., Computer & Instrumentation Div.
servo Analog Devices. Inc. Bristol Div. of Acco Burr Brown Research Corp, W.C. Dillon & Co.. Inc. Durrum Instrument Corp. Harvard Apparatus Co.. Inc. Honeywell. Inc., Process Control Div. Keltron Corp. Linear Instruments Corp. Luft Instruments, Inc. McKee-Pedersen Instruments Melcor Electronics Corp. Pyro-Serv Instruments, Inc. Schaevitz Engineering Shimadzu Seisakusho. Ltd. Soltec Corp. Sprague Electric Co. Westinghouse Electric Corp.. Computer & Instrumentation Div.
thermocouple Analog Devices, Inc. Barber-Colman Co. Bristol Div. of Acco Burr Brown Research Corp. Consolidated Ohmic Devices, Inc. Dynasciences Corp. Ectron Corp. Elnik Instruments, Inc. Gencom Div. Gould. Inc., Instrument Systems Div. Hewlett-Packard Co.. (Calit.) Honeywell Test Instruments Div. Hy-Cal Engineering Japan Spectroscopic Co., Ltd. Leeds & Northrup Co. Materials Development Corp. Matthey Bishop. Inc. Nuclide Corp. Precision Digital Precision Forming & Stamping Co. Pye Unicam Ltd. Pyro-Serv Instruments, Inc. Shimadzu Seisakusho, Ltd. Soltec Corp. Teledyne Philbrick Telmar, Inc. Thermolyne Corp. United Technical Corp. Westinghouse Electric Corp., Computer & Instrumentation Div.
transducer and strain gage Analog Devices. Inc. Β & F Instruments, Inc. Barber-Colman Co. Beckman instruments. Inc. Bell & Howell Biotronex Lab., inc. Bristol Div. of Acco Burr Brown Research Corp. Chemtronics. Inc. C. J. Enterprises Datametrics W.C. Dillon δ Co., Inc. Dynasciences Corp. Elnik Instruments, Inc Endevco Genisco Technology Corp. Gilmore Industries. Inc. Gouid. inc.. Instrument Systems Div. Gulton Industries, Inc. Harvard Apparatus Co., Inc. Hathaway Industries Hewlett-Packard Co.. (Calif.) Honeywell Test Instruments Div. Hy-Cal Engineering Instron Corp
LABORATORY
GUIDE
AMPLIFIERS, transducer and strain gage ANALYZERS, chromatographic fraction InterOcean Systems. Inc. Intronics, Inc. Mhaco, inc. Konigsberg instruments, Inc. Leeds & Nortbrup Co. Martin-Decker Co. Nate! Engineering Co.. Inc. Newport Labs., Inc. Pye Unicam Ltd. Schaeviîz Engineering Sensotec, Inc. Shirnadzu Seisakusho, Ltd.
Soltec Corp.
Statham Instruments, Inc. Stoeiting Co. Sundstrand Data Control, Inc. Tektronix, inc. Teiedyne Philbrick Teledyne Taber Telmar, inc. Tyco Instrument Div,
wideband
2I cφ
ε α
'3 σ LU •ο c «J
I
Φ
ε s *
AEL, Inc. American Vector. Inc. Arnperex Electronic Corp. Analog Devices, inc. Arenberg Ultrasonic Lab., inc. Bell & Howell Bruker-Magnetics, Inc. Bruker Scientific, Inc. Burr Brown Research Corp. C-COR Electronics, Inc. CML-Macarr, inc. Ectron Corp. Electronic Navigation Industries, Inc. Elscint Inc. Hewlett-Packard Co.. (Calif.) Honeywell Test Instruments Div, Intronics. inc. Isomet Corp. Itek Corp. Ithaco, Inc. Japan Spectroscopic Co., Ltd. Keithiey Instruments, inc. McKee-Pedersen Instruments Melcor Electronics Corp. Newport Labs., Inc. Nuclide Corp. Princeton Applied Research Corp, PRO Electronics, Inc. RCA Electronic Components SSR Instruments Co.
Tektronix, Inc.
Teledyne Philbrick Watkins-Johnson Co.
ANALOG SIGNAL CORRELATORS Natel Engineering Co., Inc. Nicolet instrument Corp. Perkin-Elmer Corp. Princeton Applied Research Corp. Shirnadzu Seisakusho. Ltd. Technical Instruments Vangard Systems, Inc.
ANALYZERS air Aero Vac Corp.
American Instrument Co. Anacon. inc. Analytical instrument Development, Inc. Andros. Inc. Antek Instruments. Inc. Barnebey-Cneney Beckman Instruments, Inc. The Bendix Corp., Process instruments Div. Bowers Instrument Co.
See t h e WILKS SCIENTIFIC air analyzers ad on page 47 Calibrated Instruments, Inc. Carle Instruments, Inc. CEA Instruments Centrai Scientific Co. Chemical Data Systems, Inc. Chemironies, Inc. Climet Instruments Co. Coulter Electronics, Inc. Curtin Scientific Co, CVC Products. Inc. DEVCO Engineering, inc.
46 tG AUGUST 1974
E. I, du Pont de Nemours & Co.. Inc.
Dynasciences Corp. Electronic Associates, Inc. Environmental Sciences Associates, Inc. E.O.C.O.M. Carlo Erba S.p.A. Extranuclear Labs., Inc. F S J Scientific Ftnnigan Corp. A. Galienkamp and Co. Ltd. GCA/Precision Scientific GCA Technology Div. Greiner Scientific Corp. R.J. Harvey Instrument Corp. The Hays Corp. Houston-Atlas, inc. fNAX Instruments Ltd. International Biophysics Corp, Intertech Corp. ITT Barton Kosiow Scientific Co. Leeds & Northrup Co. Lovibond of America, inc. McMillan Electronics Corp, McPherson Instrument Corp. MDA Scientific, inc. Mine Safety Appliances Co. Monsanto Co. National Environmental Instruments inc. National instrument Laboratories, inc. Nuclepore Corp. Nuclide Corp. Perkin-Elmer Corp. Philips Electronic Instruments, Inc. Process Analyzers, Inc. * Pye Unicam Ltd. Research Appliance Co. Royco Instruments, Inc. Scientific Industries, Inc, SGA Scientific Inc. Shirnadzu Seisakusho, Ltd. Soilec Corp. Spectral imaging, inc. Spectro Products, Inc. Sunshine Scientific Technicon Industrial Systems Teledyne Analytical Instruments Thermo-Systems, Inc, Tracor, inc. United Technical Corp. Uthe Technology International UTI Varian Instrument Div,
Varian Vacuum Oiv,
WeaîherMeasure Corp. Weston and Stack, inc. Wilkens-Anderson Co. Wilks Scientific Corp.
amino acid American Instrument Co, J, T, Baker Chemical Co, Biomed Instruments, Inc.
Durrum Instrument Corp.
Glenco Scientific, inc. LKB Instruments, inc. Rank Precision Industries, Inc. Sanda, Inc. TCS Technicon Industrial Systems
automatic ABBOTT, Scientific Products Div. American Instrument Co. American Monitor Corp, Anacon, Inc. J. T. Baker Chemical Co. Beckman Instruments. Inc. Betz Laboratories, Inc. Bio-Cal Instrument Co. Brinkmann Instruments, Inc. Coleman Instruments Core Laboratories, Inc. Coulter Electronics, Inc. Delta Scientific Corp. DOHRMANN Div. Envirotech Corp. E. I. du Pont de Nemours & Co., Inc. Dynasciences Corp. Electro-Nucleonics, inc. Carlo Erba S.p.A. Fiske Associates, Inc. General Radio Co. Gilford Instrument Labs., Inc, Glenco Scientific, Inc. Hach Chemical Co. Hycel, inc. INAX instruments Ltd. Instrumentation Laboratory Inc. Intertech Corp. ITT Barton Johnston Laboratories. Inc. Kay-Ray, Inc. Kosiow Scientific Co. Leco Corp. Leeds & NorthrupCo. Lightner Instrument Co. LKB Instruments, Inc. Luft instruments, inc.
Milton Roy Co. Myron L Co. Orion Research inc. Patentrol Corp, Perkin-Elmer Corp. Philips Electronic Instruments, Inc. Precision Systems, Inc. Princeton Applied Research Corp. Pye Unicam Ltd. Royco instruments, inc. Sanda, Inc. Scientilic Industries, Inc, Sherwood Medical Industries, Inc. TCS Technicon industrial Systems Tefedyne Analytical instruments Thermeo instrument Corp. Tracor, Inc. Zena Co.
beta ray Analog Technology Corp. Intertech Corp. LND, Inc. Nuclear Data, Inc. Nuclear Equipment Chemicai Corp. Nuclear Equipment Corp. The Ohmart Corp. Packard Instrument Co., Inc. Scientific Resources, Inc. Soltec Corp.
blood gas Bowers Instrument Co. Corning Glass Works Corning Scientific instruments CVC Products, inc. DOHRMANN Div. Envirotech Corp. E. I. du Pont de Nemours & Co., Inc. Gilson Medical Electronics, Inc. Instrumentation Laboratory Inc. MDA Scientific, Inc. Scientific Industries, Inc, Scientific Research instruments Corp. SGA Scientific Inc. Statham Instruments, Inc. Utopia instrument Co.
carbon, hydrogen nitrogen Aero Vac Corp, Atrco, Inc. American Instrument Co, Applied Automation, inc. Bacharach instrument Co, Beckman Instruments, Inc. Brinkmann instruments, inc. Calibrated Instruments, Inc. Chemicai Data Systems, Inc, Coleman Instruments Curtin Scientific Co. DEVCO Engineering, Inc. Dynasciences Corp. Carlo Erba S.p.A. Greiner Scientific Corp, Hallikainen R. J. Harvey instrument Corp. The Hays Corp. Hewiett-Packard, Avondale Div. Intertech Corp. Leco Corp, Leeds & Northrup Co, Manufacturers Engineering & Equipment Corp. Med-Science Electronics, Inc. Mine Safety Appliances Co. Monitor Labs., Inc. Perkin-Elmer Corp. Sanda, Inc, Sargent-Welch Scientific Co. Scientific Resources, Inc. Shirnadzu Seisakusho, Ltd. Teiedyne Analytical instruments Thermeo Instrument Corp, Arthur H. Thomas Co. Utopia Instrument Co. Varian Vacuum Div. WeatherMeasure Corp. Zena Co.
Curtin Scientific Co. DEVCO Engineering, Inc. DOHRMANN Div. Envirotech Corp. Dwyer Instruments, Inc. Dynasciences Corp. E.O.C.O.M. Fisher Scientific Co. A. Gailenkamp and Co. Ltd. Greiner Scientific Corp, Harleco Harvard Apparatus Co., Inc. R. J. Harvey Instrument Corp. The Hays Corp.
Intertech Corp.
Kent Cambridge instrument Co. Kosiow Scientific Co. Lab-Line instruments, inc Leeds & Northrup Co. Lovibond of America, Inc. Manufacturers Engineering & Equipment Corp, MDA Scientific. Inc. Mine Safety Appliances Co. Modern Controls, inc, Monitor Labs., Inc. National Environmental Instruments Inc. Sanda, Inc. Sargent-Welch Scientific Co. Scientific Glass & Instruments, inc. Scientific Research Instruments Corp. Scientific Resources. Inc. Scientific Systems Corp. Shirnadzu Seisakusho, Ltd. Statham instruments. Inc. Technicon industrial Systems Thermeo instrument Corp. United Technical Corp, UTI Utopia Instrument Co, Varian Instrument Div, Wilks Scientific Corp,
chlorine Aero Vac Corp.
Anacon. inc. Buchler instruments Capital Controls CoCorning Scientific Instruments Delta Scientific Corp. DEVCO Engineering, Inc. DOHRMANN Div. Envirotech Corp. E. t. du Pont de Nemours & Co., inc. Enraf-Nonius. Inc. Carlo Erba S.p.A. Fischer &. Porter Co. Fiske Associates, Inc. Hach Chemical Co, The Hays Corp.
See the DOHRMANN Trace Chlorine ad on page 100 HelMge, inc. Intertech Corp. Kent Cambridge Instrument Co. Kernco instruments, Inc. Kosiow Scientific Co.
LaMotte Chemical Products Co. Leeds & Northrup Co. Lovibond of America, inc. Manufacturers Engineering & Equipment Corp, Mast Development Co, MDA Scientific, inc. Mine Safety Appliances Co. National Environmental Instruments Inc. Orion Research Inc. Process Analyzers, Inc. {Tex.} Scientific Resources. Inc. Technicon Industrial Systems Tracor, Inc, Universal interioc. Inc. Utopia Instrument Co, Varian Instrument Div, Wallace & Tieman
carbon dioxide Aero Vac Corp. Airco, inc. Analytical Instrument Development, Inc. Andros, Inc, Antek Instruments, Inc. Applied Automation, Inc. Beckman Instruments, Inc. The Bendix Corp,. Process instruments Div. Bowers Instrument Co. Calibrated Instruments, Inc, Chemtronics, Inc. Corning Scientific Instruments
chromatographic fraction Applied Automation, inc.
J. T. Baker Chemical Co.
Barnes Engineering Co. Biomed Instruments, Inc. CVC Products, inc. E. L du Pont de Nemours & Co., inc. E.O.C.O.M. Glenco Scientific, Inc. Honeywell, Inc.. Process Control Div, Norcon Instruments Inc. Spectral Imaging, Inc, Utopia instrument Co.
LABORATORY
GUIDE
A N A L Y Z E R S , color A N A L Y Z E R S , gas color
2 C Φ
Ε α
S Ό C
ε α
"5 cr LU
"Ο C
automatic
Ε
Ace Glass, Inc. Baroid Div. The Bellacour Co, C. W. Brabender Instruments, Inc. Brinkmann Instruments, Inc. Chatas Glass Co. Cole-Parmer Instrument Co. Corning Glass Works Curtin Scientific Co. Custom Glassblowing Service Delta Scientific Corp. Doerr Glass Co. Eck & Krebs. Inc. Fischer & Porter Co. Fisher Scientific Co. A. Gallenkamp and Co. Ltd. Gilson Medical Electronics. Inc. Isolab, Inc. Kontes Kontes/Martin, Inc. Kraft Apparatus, Inc. Lab Glass, Inc. LaMotte Chemical Products Co. The London Co. Luft Instruments. Inc. Manostat Corp. Mercer Glass Works, Inc. Metro Scientific. Inc. Mettler Instrument Corp. Nuclear Equipment Chemical Corp. Owens-Illinois, Inc. Prolabo Quartz General Corp. Rascher & Betzold, Inc. Sargent-Welch Scientific Co. Scientific Glass & Instruments. Inc. Scientific Industries, Inc. SGA Scientific Inc. Technilab Instruments, Inc. Arthur H. Thomas Co. Tronac, Inc. Tudor Scientific Glass Co. Watcon, Inc. Wheaton Scientific Zena Co.
micro Ace Glass, Inc. The Bellacour Co. Brinkmann Instruments, Inc. Chatas Glass Co. Cole-Parmer Instrument Co. Corning Glass Works Custom Glassblowing Service Eck & Krebs. Inc. F & J Scientific Fischer & Porter Co. Fisher Scientific Co. A. Gallenkamp and Co. Ltd. Roger Gilmont Instruments, Inc. Kontes Kontes/Martin, Inc. Lab Glass. Inc. Labindustries LaMotte Chemical Products Co. The London Co.
AUGUST 1974 65 LG
α
"5 σ
LU •ο c (0
Β c φ
Ε 5 %
BURETS AND ACCESSORIES CAPACITANCE STANDARDS Manostat Corp. Mercer Glass Works, Inc. Metro Scientific, Inc. MISCO Scientific Nuclear Equipment Chemical Corp. Owens-Illinois. Inc. Precision Forming & Stamping Co. Prolabo Quartz General Corp. Sargent-Welch Scientific Co. Scientific Glass & Instruments, Inc. Scientific Industries, Inc. SGA Scientific Inc. Arthur H. Thomas Co. Tudor Scientific Glass Co. Wheaton Scientific
CALORIMETERS & ACCESSORIES adiabatic Andonian Cryogenics, Inc. A. Gallenkamp and Co. Ltd. LKB Instruments, Inc. Parr Instrument Co. Prolabo Rigaku/USA Sanda, Inc. Shimadzu Seisakusho, Ltd. Technical Equipment Corp. Thermonetics Corp. Tronac, Inc.
piston
2I C Φ
Ε
α
'5 σ LU •σ
c
(0
iS c
φ
Ε 3 h.
% C
Ace Glass, Inc. Analtech, Inc. The Bellacour Co. Brinkmann Instruments, Inc. Chatas Glass Co. Roger Gilmont Instruments, Inc. The London Co. Manostat Corp. Mettler Instrument Corp. Prolabo Quartz General Corp. Sargent-Welch Scientific Co. Scientific Glass & Instruments, Inc. Zena Co.
bomb — see also pressure reaction apparatus Carlo ErbaS.p.A. A, Gallenkamp and Co. Ltd. Lab-Line Instruments, Inc LKB Instruments, Inc, Parr Instrument Co. Pressure Products Industries Prolabo Scott Testers Setaram Shimadzu Seisakusho. Ltd. Thermonetics Corp.
plastic
differential thermal
Dynalab Corp. LaMotte Chemical Products Co. Nalge Co,
Columbia Scientific Industries E. I. du Pont de Nemours & Co., Inc. Kah! Scientific Instrument Corp. Mettler Instrument Corp. The Edward Orton Jr. Ceramic Foundation Perkin-Elmer Corp. Rigaku/USA Schuco Setaram Shimadzu Seisakusho, Ltd. Technical Equipment Corp. Thermonetics Corp.
BURNERS AND ACCESSORIES Beckman Instruments, Inc. Bethlehem Apparatus Co., Inc. Wm. Boekel & Co., Inc. CCM: Schaar Scientific, Inc. Central Scientific Co. Ditric Corp. Electrothermal Ltd. Emerson Electric Co., White-Rogers Div. F & J Scientific Fisher Scientific Co. GCA/Precision Scientific Harrison Engineering Div. Humboldt Mfg. Co. Κ. Η. Huppert Co., Inc. Litton Engineering Labs. Maxon Corp. Perkin-Elmer Corp. Prolabo Roberts-Gordon Appliance Corp. Sargent-Welch Scientific Co. Schuco Selas Corp. of America Surface Combustion Div. Tescom Corp. Trane Thermal Co. Turner Co. Wale Apparatus Co. Wheaton Scientific
CALCULATORS Eldorado Electrodata Corp. Gelman Instrument Co. Heath/Schlumberger Instruments MITS, Inc. Monroe, The Calculator Co. Olivetti Corp. of America Tektronix, Inc. Utopia Instrument Co. Victor Comptometer Corp. Wang Laboratories. Inc.
gas Antek Instruments, Inc. GCA/Precision Scientific Process Analyzers, Inc. (Tex.) Scott Testers Thermonetics Corp.
isothermal Sanda, Inc. Setaram Thermonetics Corp. Tronac, Inc.
micro LKB Instruments, Inc. Microscal, Ltd. Sanda, Inc, Setaram Thermonetics Corp. Tronac. Inc.
scanning Columbia Scientific Industries E. I. du Pont de Nemours & Co., Perkin-Elmer Corp. Rigaku/USA Setaram
specific heat Custom Scientific Instruments, Inc. Mettler Instrument Corp. Professional Tape Co., Inc. Sanda. Inc. Setaram Thermonetics Corp. Tronac, Inc,
other LKB Instruments, Inc. Scientech, inc. Setaram Tronac, Inc.
CAMERAS fluorescence, x-ray Associated Electrical Industries International Ltd. Diano Corp. Diano Corp., Industrial X-Ray Div, Hamamatsu Corp. INAX Instruments Ltd. Philips Electronic Instruments. Inc. Polaroid Corp. Rigaku/USA
infrared Baird-Atomic, Inc. Barnes Engineering Co. E.0.C0.M. Hamamatsu Corp. Jackson & Church Electronics Co. Rank Precision Industries, Inc. Research Devices, inc. Spectral Imaging, Inc. Unilux. Inc.
oscilloscope The Ealing Corp. Edmund Scientific Co. E-H Research Laboratories. Inc. Karl Heitz, Inc. Hewlett-Packard Co., (Calif.) Polaroid Corp. Redlake Corp. Shimadzu Seisakusho, Ltd. Tektronix, Inc. Tracor Northern, Inc.
photomicrographic microbiological Lab-Line Instruments, Inc LKB Instruments, Inc. Sanda, Inc. Setaram Thermonetics Corp.
CALIBRATION SYSTEMS
optical
Analytical Instrument Development. Inc The Bendix Corp., Process Instruments Div. James G. Biddle Co. Consolidated Controls Corp. Corning Scientific Instruments Dasibi Environmental Corp. Datametrics Hewlett-Packard Co., (Calif.) King Nutronics Corp, MISCO Scientific MKS Instruments, Inc. Non-Linear Systems, Inc. Research Appliance Co. Scientific Glass & Instruments, Inc. Simpson Electric Co. Sunshine Scientific Volumetrics
Brinkmann Instruments, Inc. Davidson Optronics, Inc. EG&G Inc., Technical Products Group Esco Products Fish-Schurman Corp. Janos Optical Corp. Optical Industries. Inc. Scientech, Inc.
66 LG AUGUST 1974
Lab-Line Instruments, Inc Parr Instrument Co. Process Analyzers, Inc. (Tex.) Scott Testers Tronac, Inc. United States Testing Co., Inc.
petroleum testing Bico, Inc. Carlo Erba S.p.A. Fish-Schurman Corp. A. Gallenkamp and Co. Ltd. Greiner Scientific Corp. Kaltec Scientific Instrument, Inc.
American Optical Corp., Scientific Instrument Div. Bausch & Lomb, SOPD Div. Charles Beseler Co. Brinkmann Instruments, Inc. Buehler Ltd. Electronics & Alloys, Inc. Ercona Corp. Fish-Schurman Corp. GCA/David W. Mann Co. Haber Instruments. Inc. Hacker Instruments, Inc. Karl Heitz, Inc. E. Leitz, Inc. Nikon, Inc, Olympus Corporation of America Polaroid Corp. Projectina USA Redlake Corp. Sage Instruments Southern Precision Instrument Co. Unitron Instrument Co. Vickers Instruments, Inc. Wild Heerbrugg Instruments, Inc. Carl Zeiss, Inc.
time-lapse Ercona Corp, Haber Instruments, Inc. Hamamatsu Corp. Karl Heitz, Inc. Marietta Apparatus Co. Nikon. Inc, Redlake Corp. Sage instruments Wild Heerbrugg Instruments, Inc.
ultra-high speed Ercona Corp. Haber Instruments, Inc. Karl Heitz, Inc. Redlake Corp. Sage Instruments
x-ray Advanced Metals Research Corp. Blake Industries, Inc. Browmar Labs,, Inc. Cenco X-Ray Co. CGR Medical Corp. Controlled Atmosphere, Inc. Diano Corp. Diano Corp., Industrial X-Ray Div. Electronics & Alloys, Inc. Enraf-Nonius, inc, Ercona Corp. General Electric Co., Analytical Measurements Karl Heitz, Inc. Materials Research Corp. Nuclear Associates, Inc. Philips Electronic Instruments, Inc. Rigaku/USA Syntex Analytical Instruments Westinghouse Electric Corp.
other Antech. Inc. Colorado Video. Inc. Galileo Electro-Optics Corp. Karl Heitz, Inc. Jackson & Church Electronics Co. Librascope Div. Polaroid Corp. RCA-Communications Systems Div. Searle Analytic, Inc. Spectral Imaging, Inc. Unilux, Inc. Zena Co,
CAPACITANCE MEASURING EQUIPMENT Balsbaugh Laboratories, Inc. Beckman Instruments, Inc. Datametrics Dranetz Engineering Labs., Inc. Dynamic Data Corp. Electro Scientific Industries, Inc. Gencom Div. General Radio Co. Heath/Schlumberger Instruments Hewlett-Packard Co.. (Calif.) The Hickok Electrical Instrument Co. Kahl Scientific Instrument Corp. Kratos Lake Shore Cryotronics, Inc. The London Co. Mechanical Technology, Inc. Photobell Co., Inc. PolyScience Corp. Rohde & Schwarz Sales Co. (USA) ln< Rutherford Research Products Co. Simpson Electric Co. Special Instruments & Machinery Co. Sprague Electric Co. Tektronix. Inc. Tetrahedron Associates. Inc,
CAPACITANCE STANDARDS Electro Scientific Industries. Inc. General Radio Co. Lake Shore Cryotronics, inc. Rohde & Schwarz Sales Co. (USA) Inc. Rutherford Research Products Co. Special Instruments & Machinery Co. Sprague Electric Co. Tektronix, Inc.
LABORATORY
GUIDE
CAPACITORS, high voltage storage CELLS, photofluorometers CAPACITORS, high voltage storage Del Electronics Corp. General Electric Co. Lake Shore Cryotronics, Inc. Raytheon Co., Industrial Electronics Dept. Ronde & Schwarz Sales Co. (USA) inc. Sprague Electric Co. Union Carbide Corp., Materials Systems Oiv. United Mineral & Chemical Corp.
CARBON, activated Bamebey-Cheney Chemical Research Services. Inc. Coast Engineering Laboratory Hruden Laboratory Products Ion Exchange Products, inc. Pittsburgh Activated Carbon Div. SERFILCO Sethco Manufacturing Corp. Union Carbide Corp., Carbon Products Div. VAR-LAC-OID Chemical Co. Westvaco Corp.
CARTS, laboratory
α C
Φ
Ε α
'5 σ m Ό
c
(0
Β c Φ
ε 3 ν-
"5 c
Arnseo Industrial Co. Atomic Products Corp. Baird-Atomic, inc. Beckman instruments, inc. S. Biickman, Inc. Browne-Morse Co. Camag. inc. Curtin Scientific Co. Duralab Equipment Corp. Fisher Scientific Co. General Scientific Equipment Co. Hamilton Industries Hewlett-Packard Co., (Calif.) Hruden Laboratory Products Interplastic Corp. Kaufman Glass Co. Kewaunee Scientific Equipment Corp. Kontes Labco Div. Labconco Corp, Neslab Instruments, Inc. Nuclear Associates, Inc. Nuclear Equipment Chemical Corp. Penn-Chem Corp. Perimair Co. Production Systems, inc. Pro! a bo Schroer Mfg. Co. Scientific ProductsE. H. Sheldon Equipment Co. Southern Cross Manufacturing Corp, Tektronix, Inc. United Technical Corp.
CASSEROLES Coors Porcelain Co. Coming Glass Works Fisher Scientific Co. Mercer Glass Works. Inc. Syncor Products Co.. Inc.
CATALYTIC REACTION APPARATUS Autoclave Engineers, Inc. Bench Scale Equipment Co. Chemical Data Systems, inc. ColemamDelmar Glass Products The Duriron Co., inc. Ionics. Inc. Lab Glass, inc. Parr Instrument Co.
Avco Everett Research Lab., Inc. Barnes Engineering Co. Coast Engineering Laboratory Coleman Instruments Gilford Instrument Labs., Inc. Harrick Scientific Corp. Heat Systems-Ultrasonics, Inc. Janos Optical Corp. Key Associates Klelt Manufacturing Co.. Inc. Markson Science, Inc. Philips Electronic instruments, Inc. Precision Cells, Inc. Quaracell Products. Inc. Rudolph Instruments Savant instruments. Inc. Smyth Precision Glass Mfg. Co. TCS Thermal American Fused Quartz Co. Transidyne General Corp. Varian Instrument Div. Varian Techtron Wilks Scientific Corp. C. N.Wood Mfg. Co. Carl Zeiss, Inc.
colorimeter American Instrument Co, Coleman Instruments Delta Scientific Corp. Glenco Scientific, Inc. Klett Manufacturing Co., Inc. E. Leitz, Inc. Loyibond of America, Inc. Markson Science, Inc. Savant Instruments. Inc. Smyth Precision Glass Mfg. Co. TCS Carl Zeiss, Inc.
conductivity — see also conductivity equipment Aquatronics, Inc. Balsbaugh Laboratories, Inc. Barnstead Co. Beckman Instruments, Inc. Betz Laboratories, Inc. Brinkmann Instruments, Inc. Chromalytics Corp. Chromatronix Crystalab. Inc. Delta Scientific Corp. Oynasciences Corp. Dynatech R/D Co. Fisher Scientific Co. The Foxboro Co. Gow-Mac Instrument Co. Ion Exchange Products. Inc. Kahl Scientific instrument Corp. Kent Cambridge instrument Co. Lab-Line Instruments. Inc Leeds & NorfhrupCo. LKB Instruments, Inc. The London Co. Magna Corp. Markson Science, Inc. McNab, Inc. Mechanical Technology. Inc. Milton Roy Co. Myron L Co. Precision Forming & Stamping Co. Pye Unicam Ltd. ~ Rutherford Research Products Co, Sargent-Welch Scientific Co. Schneider instrument Co. Scientific Glass & Instruments, Inc. Sensor Technology, inc. Sprague Electric Co. Arthur H. Thomas Co. Tri-R instruments. Inc. Universal interloc. Inc. Utopia Instrument Co. Victory Engineering Corp. Wescan Instruments, Inc. Yellow Springs Instrument Co., Inc.
diaSysis CATHETOMETERS Central Scientific Co. The Ealing Corp. Eberbach Corp. Gaertner Scientific Corp. National Instrument Co.. Inc. Optical Industries, Inc. Pye Unicam Ltd. Ruska Instrument Corp. Sargent-Welch Scientific Co.
CELLS absorption American Instrument Co. Amersii. Inc.
72 LG AUGUST 1974
Biomed Instruments, Inc. Bio-Rad Laboratories Custom Glassblowing Service Dow Chemical U.S.A. Technilab Instruments, Inc.
dipole moment Balsbaugh Laboratories. Inc. Kahl Scientific Instrument Corp. Rutherford Research Products Co.
electrolytic Beckman Instruments, Inc. Camag. inc.
E. I, du Pont de Nemours & Co., Inc. Oynasciences Corp. Ionics, Inc, Pacific Engineering & Production Co. of Nevada Princeton Applied Research Corp. Sargent-Welch Scientific Co. Sprague Electric Co. Tracor, Inc.
electrophoresis Biomed instruments, inc. Bio-Rad Laboratories Buchler instruments Camag. inc. Corning Scientific Instruments E-C Apparatus Corp. Gelman Instrument Co. Instrumentation Laboratory Inc. Millipore Corp. ORTEC Incorporated Pen Kem Co. Pharmacia Fine Chemicals. Inc. Precision Cells, Inc, Quaracell Products, Inc. Shandon Southern Instruments, Inc. Smyth Precision Glass Mfg. Co. Carl Zeiss, Inc. Zeta-Meter, Inc.
micro American Instrument Co. Barnes Engineering Co. Coleman Instruments Digilab, Inc. Gilford Instrument Labs,. Inc. Harrick Scientific Corp. Heat Systems-Ultrasonics, Inc. Key Associates Precision Cells, Inc. Pyroceil Mfg. Co.. Inc. Quaracell Products. Inc. Savant Instruments, Inc. Smyth Precision Glass Mfg. Co. TCS Thermal American Fused Quartz Co. Carl Zeiss, Inc.
NMR Bruker Scientific, Inc. Digilab, Inc. Kontes Kontes/Martin. Inc. Lab Glass. Inc. Perkin-Elmer Corp. Varian Instrument Div. Wilmad Glass Co., Inc,
flow through
optical
Altex Scientific, Inc. American Instrument Co. Coleman instruments Gilford instrument Labs,, inc. Glenco Scientific, Inc, Harrick Scientific Corp. Heat Systems-Ultrasonics, Inc. Pacific Engineering & Production Co. of Nevada Philips Electronic Instruments, Inc. Precision Cells, Inc. Quaracell Products, inc. Sanda, Inc. Savant Instruments, Inc. Smyth Precision Glass Mfg. Co. , Southwestern Analytical Chemicals. Inc. TCS Thermal American Fused Quartz Co, G. K. Turner Associates Varian Instrument Div. Wilks Scientific Corp. Carl Zeiss, Inc.
American Instrument Co. Amersii. Inc. Andonian Cryogenics. Inc. Avco Everett Research Lab.. Beckman instruments. Inc. Calbiochem Gary Instruments Coleman instruments Diano Corp. The Ealing Corp. E.O.C.O.M. Esco Products F& J Scientific Farrand Optical Co.,, inc. Fischer &. Porter Co. Fisher Scientific Co. Fish-Schurrnan Corp, Gaertner Scientific Corp. Hamamatsu Corp. Hellige, Inc. Hellrna Cells, Inc. International Crystal Laboratories Janos Optical Corp. Japan Spectroscopic Co.. Ltd. Key Associates Klett Manufacturing Co.. inc. Kolimorgen Corp. Kontes E. Leitz. Inc. Lenox Instrument Co. Lightpath Cells, inc. Lovibond of America, Inc. Macbeth Color & Photometry Div. Markson Science, inc. Perkin-Elmer Corp. Perkin-Elmer, Ltd. Pomfret Research Optics Inc. Precision Cells, Inc. Pyroceil Mfg. Co., Inc. Quaracell Products. Inc. Rank Precision Industries Ltd., Analytical Div. Rudolph Instruments SAS Scientific Chemicals, Ltd. Savant Instruments, Inc. Scientific Cell Co.. Inc. Shirnadzu Seisakusho, Ltd. Smyth Precision Glass Mfg. Co. Syncor Products Co,, Inc. TCS Thermal American Fused Quartz Co. Wilks Scientific Corp. Worden Quartz Products Carl Zeiss, Inc.
fluorescence American Instrument Co. Chemplex Industries, Inc. Coleman instruments Markson Science, inc. Precision Cells, Inc. Pyroceil Mfg. Co.. Inc. Quaracell Products. Inc. Savant Instruments, inc. Smyth Precision Glass Mfg. Co. TCS Thermal American Fused Quartz Co. G, K, Turner Associates Carl Zeiss, Inc.
gas analysis Barnes Engineering Co. Beckman Instruments, Inc. Carle Instruments, Inc. Chemical Data Systems, Inc. Chemtronics, Inc. Chromalytics Corp. Coast Engineering Laboratory Digilab, Inc. Oynasciences Corp. Carlo Erba S.p.A. Gow-Mac Instrument Co, R. J. Harvey Instrument Corp. The Hays Corp. Heiima Cells, inc. Kent Cambridge Instrument Co. Leeds & Northrup Co. Manufacturers Engineering & Equipment Corp. Markson Science, Inc. Mine Safety Appliances Co. Perkin-Elmer Corp. Philips Electronic Instruments, Inc. Precision Forming & Stamping Co. Schuco Scientific Cell Co., Inc. Scientific Glass & Instruments, Inc. Shirnadzu Seisakusho. Ltd. Smyth Precision Glass Mfg. Co. Thermco Instrument Corp. Transidyne General Corp Varian instrument Div. Wilks Scientific Corp. Carl Zeiss. Inc.
photofluorometers — aisofluorometers American Instrument Co. Baird-Atorriic. Inc. Beckman Instruments, Inc. Biomed Instruments, Inc. Coleman Instruments Carlo Erba S.p.A. Farrand Optical Co., Inc. Fisher Scientific Co. Hellrna Cells, Inc. International Crystal Laboratories Lightpath Cells, Inc. Markson Science, Inc. Perkin-Elmer Corp, Phofovoit Corp, Scientific Ceil Co., Inc. Shirnadzu Seisakusho, Ltd. Smyth Precision Glass Mfg. Co.
LABORATORY
GUIDE
CELLS, photofluorometers CEMENT TESTING EQUIPMENT Thermal American Fused Quartz Co. G. K. Turner Associates Carl Zeiss, Inc.
photosensitive The Ealing Corp. EG&G Inc., Technical Products Group Electrodata Concepts, Inc. EMR Photoelectric Galileo Electro-Optics Corp. Gencom Div. Hamamatsu Corp. Heuer Time & Electronics Corp. Hewlett-Packard Co.. (Calif.) Kontes Optoelectronics, Inc. Photobell Co., Inc. Photronic, Inc. Raytheon Co., I ndustrial Components Operation RCA Electronic Components Sensor Technology, Inc. Shimadzu Seisakusho, Ltd. Vactec, Inc.
quartz (for liquid samples) Amersil, Inc. Avco Everett Research Lab., Inc. Bausch & Lomb, Inc., Analytical Systems Div. B/R Glass, Inc. Brinkmann Instruments, Inc. Coleman Instruments Custom Glassblowing Service Dell Optics Co., Inc. Esco Products Farrand Optical Co., Inc. Fischer & Porter Co. Gilford Instrument Labs., Inc. Heat Systems-Ultrasonics, Inc. Hellma Cells. Inc. Hi-Temp Glass Products, Inc. International Crystal Laboratories Janos Optical Corp. Japan Spectroscopic Co., Ltd. Joyce, Loebl & Co. Key Associates Kontes Kontes/Martin, Inc. Lightpath Cells. Inc. Lovibond of America, Inc. Markson Science. Inc. MISCO Scientific Perkin-Elmer Corp. Perkin-Elmer, Ltd. Philips Electronic Instruments, Inc. Precision Cells, Inc. Precision Forming & Stamping Co. Pyrocell Mfg. Co.. Inc. Quaracell Products, Inc. Rudolph Instruments Ruska Instrument Corp. Savant Instruments, Inc. Scientific Cell Co., Inc. Scientific Glass & Instruments, Inc. Scientific Services Co. Shimadzu Seisakusho, Ltd. Smyth Precision Glass Mfg. Co. Syncor Products Co., Inc. TCS Thermal American Fused Quartz Co. Arthur H. Thomas Co. U. S. Fused Quartz Co., Inc. Wilmad Glass Co.. Inc. Worden Quartz Products Carl Zeiss, Inc.
refractometer — see also refractometers Bausch & Lomb, Inc., Analytical Systems Div. Bausch & Lomb, SOPD Div. The Bellacour Co. Gam Rad, Inc. Harrick Scientific Corp. Hellma Cells, Inc. Internationa) Crystal Laboratories Kernco Instruments, Inc. Laboratory Data Control Lightpath Cells. Inc. Manufacturers Engineering & Equipment Corp. National Instrument Co., Inc. Perkin-Elmer Corp. Pharmacia Fine Chemicals, Inc. Scientific Cell Co., Inc. Shimadzu Seisakusho, Ltd. Smyth Precision Glass Mfg. Co. Terriss-Consolidated Industries Utopia Instrument Co. The VirTisCo. C. N. Wood Mfg. Co. Carl Zeiss, inc.
LABORATORY
GUIDE
spectrophotometer, continuous flow American Instrument Co. Amersil, Inc. Bausch & Lomb, Inc., Analytical Systems Div. Beckman Instruments, Inc. Biomed Instruments, Inc. Brinkmann Instruments, Inc. Coleman Instruments Delta Scientific Corp. Diano Corp. Electrothermal Ltd. Carlo Erba S.p.A. Fisher Scientific Co. Gilford Instrument Labs., Inc. Glenco Scientific, Inc. Harrick Scientific Corp. Heat Systems-Ultrasonics, Inc. Hellma Cells, Inc. International Crystal Laboratories Japan Spectroscopic Co., Ltd. Key Associates Laboratory Data Control E. Leitz, inc. Lightpath Cells, inc. Markson Science, Inc. Perkin-Elmer Corp. Perkin-Elmer, Ltd. Philips Electronic Instruments, Inc. Precision Cells, Inc. Precision Forming & Stamping Co. Pye Unicam Ltd. Pyrocell Mfg. Co., Inc. Quaracell Products, Inc. Scientific Cell Co., Inc. Scientific Services Co. Shimadzu Seisakusho, Ltd. Smyth Precision Glass Mfg. Co. TCS Thermal American Fused Quartz Co. Arthur H. Thomas Co. Varian Instrument Div. Wilks Scientific Corp. Carl Zeiss, Inc.
spectrophotometer, gas analysis Amersil, Inc. Barnes Engineering Co. Beckman Instruments, Inc. Coleman Instruments Digilab, Inc. Electrothermal Ltd. Japan Spectroscopic Co., Ltd. Markson Science, Inc. Perkin-Elmer Corp. Philips Electronic Instruments, Inc. Precision Forming & Stamping Co. Pye Unicam Ltd. Scientific Cell Co., Inc. Scientific Glass & Instruments, Inc. Scientific Services Co. Shimadzu Seisakusho, Ltd. Smyth Precision Glass Mfg. Co. Thermal American Fused Quartz Co. Wilks Scientific Corp. Carl Zeiss, Inc.
spectrophotometer, IR American Instrument Co. Amersil, Inc. Andonian Cryogenics, Inc. Barnes Engineering Co. Bausch & Lomb, Inc., Analytical Systems Div. Bausch & Lomb, SOPD Div. Beckman Instruments, Inc. Browmar Labs., Inc. Coleman Instruments
WILKS
See the SCIENTIFIC
spectrophotography IR ad on page 4 7 Digilab, Inc. Electrothermal Ltd. E.0.C0.M. Esco Products F & J Scientific Harrick Scientific Corp. R. J. Harvey Instrument Corp. International Crystal Laboratories Janos Optical Corp. Japan Spectroscopic Co., Ltd. Key Associates
Lightpath Cells, Inc. Lovibond of America, Inc. Markson Science, Inc. Perkin-Elmer Corp. Perkin-Elmer, Ltd. Philips Electronic Instruments. Inc. Photovolt Corp. Pomfret Research Optics Inc. Precision Cells. Inc. Pye Unicam Ltd. Quaracell Products. Inc. Rank Precision Industries Ltd., Analytical Div. Charles M. Reeder Co., Inc. Scientific Glass & Instruments, Inc. Scientific Services Co. Shimadzu Seisakusho, Ltd. Smyth Precision Glass Mfg. Co. Syncor Products Co., Inc. Thermal American Fused Quartz Co. Utopia Instrument Co. Wilks Scientific Corp. Worden Quartz Products
spectrophotometer, UV American Instrument Co. Amersil, Inc. Andonian Cryogenics, Inc. Bausch & Lomb, Inc., Analytical Systems Div. Bausch & Lomb, SOPD Div. Beckman Instruments, Inc. Biomed Instruments. Inc. Brinkmann Instruments. Inc. Calbiochem Coleman Instruments Electrothermal Ltd. Esco Products F & J Scientific Farrand Optical Co.. Inc. Fisher Scientific Co. Gilford Instrument Labs., Inc. Hamamatsu Corp. Harrick Scientific Corp. Heat Systems-Ultrasonics, Inc. Hellma Cells, (nc. International Crystal Laboratories Janos Optical Corp. Japan Spectroscopic Co., Ltd. Key Associates E. Leitz, Inc. Lightpath Cells. Inc. Lovibond of America, Inc. Markson Science, Inc. Perkin-Elmer Corp. Perkin-Elmer, Ltd. Pharmacia Fine Chemicals, Inc. Philips Electronic instruments, Inc. Photovolt Corp. Precision Cells, Inc. Prolabo Pye Unicam Ltd. Pyrocell Mfg. Co., Inc. Quaracell Products, Inc. Rank Precision Industries Ltd., Analytical Div. Rudolph Instruments Scientific Services Co. Shimadzu Seisakusho, Ltd. Sigma Chemical Co. Smyth Precision Glass Mfg. Co. Syncor Products Co., Inc. TCS Thermal American Fused Quartz Co. Arthur H. Thomas Co. Ultra Dynamics Corp. Varian Instrument Div. Worden Quartz Products Carl Zeiss. Inc.
spectrophotometer, U V g a s Amersil, Inc. Beckman Instruments, Inc. F & J Scientific R.J. Harvey Instrument Corp. Hellma Cells, Inc. Janos Optical Corp. Japan Spectroscopic Co.. Ltd. Key Associates Markson Science. Inc. Perkin-Elmer Corp. Philips Electronic Instruments. Inc. Precision Cells, Inc. Pyrocell Mfg. Co., Inc. Quaracell Products, Inc. Scientific Services Co. Shimadzu Seisakusho, Ltd. Smyth Precision Glass Mfg. Co. Syncor Products Co., Inc. Teledyne Analytical Instruments Thermal American Fused Quartz Co. Carl Zeiss, Inc.
standard electrical The Eppley Laboratory, Inc. Janos Optical Corp.
Leeds & NorthrupCo. Shimadzu Seisakusho, Ltd. Special Instruments & Machinery Co.
temperature standardization Andonian Cryogenics, Inc. JOU A N Leeds & Northrup Co. Philips Electronic Instruments, Inc. Quaracell Products, Inc. Shimadzu Seisakusho, Ltd. Weston Instruments, Inc.
UV, IR and near IR Altex Scientific, Inc. American Instrument Co. Amersil. Inc. Andonian Cryogenics. Inc. Avco Everett Research Lab., Inc. Beckman Instruments. Inc. Chromatronix Coleman Instruments Dell Optics Co., Inc. Electrothermal Ltd. EMR Photoelectric E.O.C.O.M. The Eppley Laboratory, Inc. Esco Products F& J Scientific Fisher Scientific Co. Gencom Div. Hamamatsu Corp. Harrick Scientific Corp. R.J. Harvey Instrument Corp. Heat Systems-Ultrasonics, Inc. Hellma Cells, Inc. International Crystal Laboratories Janos Optical Corp. Japan Spectroscopic Co.. Ltd. Key Associates E. Leitz, Inc. Lightpath Cells, Inc. Arthur D. Little, Inc. Lovibond of America, Inc. Macbeth Color & Photometry Div. Markson Science, Inc.
S e e the WILKS SCIENTIFIC spectrophotography IR ad on page 47
L2J c
Φ
Ε α
"5 σ ω •α c α # c φ
ε Ξ
Perkin-Elmer Corp. Perkin-Elmer, Ltd. Philips Electronic Instruments, Inc. Photovolt Corp. Pomfret Research Optics Inc. Precision Cells. Inc. Pye Unicam Ltd. Pyrocell Mfg. Co., Inc. Quaracell Products, Inc. Rank Precision Industries Ltd., Analytical Div. RCA Electronic Components Rudolph Instruments Scientific Services Co. Sensor Technology, Inc. Shimadzu Seisakusho. Ltd. Smyth Precision Glass Mfg. Co. Syncor Products Co., Inc. Teledyne Analytical Instruments Thermal American Fused Quartz Co. Unimetrics Corp. Varian Instrument Div. Varian Techtron Wilks Scientific Corp. Worden Quartz Products Carl Zeiss, Inc.
CEMENT TESTING EQUIPMENT — s e e also soil testing equipment Baroid Div. Fred S. Carver Inc. Central Scientific Co. Custom Scientilic Instruments, Inc. W. C. Dillon & Co., Inc. Fann Instrument Corp. Fisher Scientific Co. GCA/Precision Scientific Greiner Scientific Corp. Hotpack Corp. Humboldt Mfg. Co. Instrumentation Laboratory Inc. Lab Glass, Inc. Leco Corp.
AUGUST 1974 77 LG
%
c
CAPACITORS, high voltage storage CELLS, photofluorometers CAPACITORS, high voltage storage Del Electronics Corp. General Electric Co. Lake Shore Cryotronics, Inc. Raytheon Co., Industrial Electronics Dept. Ronde & Schwarz Sales Co. (USA) inc. Sprague Electric Co. Union Carbide Corp., Materials Systems Oiv. United Mineral & Chemical Corp.
CARBON, activated Bamebey-Cheney Chemical Research Services. Inc. Coast Engineering Laboratory Hruden Laboratory Products Ion Exchange Products, inc. Pittsburgh Activated Carbon Div. SERFILCO Sethco Manufacturing Corp. Union Carbide Corp., Carbon Products Div. VAR-LAC-OID Chemical Co. Westvaco Corp.
α C Φ
Ε α
'5 σ m Ό
c
(0
Β c Φ
ε 3 ν-
"5 c
CARTS, laboratory Arnseo Industrial Co. Atomic Products Corp. Baird-Atomic, inc. Beckman instruments, inc. S. Biickman, Inc. Browne-Morse Co. Camag. inc. Curtin Scientific Co. Duralab Equipment Corp. Fisher Scientific Co. General Scientific Equipment Co. Hamilton Industries Hewlett-Packard Co., (Calif.) Hruden Laboratory Products Interplastic Corp. Kaufman Glass Co. Kewaunee Scientific Equipment Corp. Kontes Labco Div. Labconco Corp, Neslab Instruments, Inc. Nuclear Associates, Inc. Nuclear Equipment Chemical Corp. Penn-Chem Corp. Perimair Co. Production Systems, inc. Pro! a bo Schroer Mfg. Co. Scientific ProductsE. H. Sheldon Equipment Co. Southern Cross Manufacturing Corp, Tektronix, Inc. United Technical Corp.
CASSEROLES Coors Porcelain Co. Coming Glass Works Fisher Scientific Co. Mercer Glass Works. Inc. Syncor Products Co.. Inc.
CATALYTIC REACTION APPARATUS Autoclave Engineers, Inc. Bench Scale Equipment Co. Chemical Data Systems, inc. ColemamDelmar Glass Products The Duriron Co., inc. Ionics. Inc. Lab Glass, inc. Parr Instrument Co.
Avco Everett Research Lab., Inc. Barnes Engineering Co. Coast Engineering Laboratory Coleman Instruments Gilford Instrument Labs., Inc. Harrick Scientific Corp. Heat Systems-Ultrasonics, Inc. Janos Optical Corp. Key Associates Klelt Manufacturing Co.. Inc. Markson Science, Inc. Philips Electronic instruments, Inc. Precision Cells, Inc. Quaracell Products. Inc. Rudolph Instruments Savant instruments. Inc. Smyth Precision Glass Mfg. Co. TCS Thermal American Fused Quartz Co. Transidyne General Corp. Varian Instrument Div. Varian Techtron Wilks Scientific Corp. C. N.Wood Mfg. Co. Carl Zeiss, Inc.
colorimeter American Instrument Co, Coleman Instruments Delta Scientific Corp. Glenco Scientific, Inc. Klett Manufacturing Co., Inc. E. Leitz, Inc. Loyibond of America, Inc. Markson Science, Inc. Savant Instruments. Inc. Smyth Precision Glass Mfg. Co. TCS Carl Zeiss, Inc.
conductivity — see also conductivity equipment Aquatronics, Inc. Balsbaugh Laboratories, Inc. Barnstead Co. Beckman Instruments, Inc. Betz Laboratories, Inc. Brinkmann Instruments, Inc. Chromalytics Corp. Chromatronix Crystalab. Inc. Delta Scientific Corp. Oynasciences Corp. Dynatech R/D Co. Fisher Scientific Co. The Foxboro Co. Gow-Mac Instrument Co. Ion Exchange Products. Inc. Kahl Scientific instrument Corp. Kent Cambridge instrument Co. Lab-Line Instruments. Inc Leeds & NorfhrupCo. LKB Instruments, Inc. The London Co. Magna Corp. Markson Science, Inc. McNab, Inc. Mechanical Technology. Inc. Milton Roy Co. Myron L Co. Precision Forming & Stamping Co. Pye Unicam Ltd. ~ Rutherford Research Products Co, Sargent-Welch Scientific Co. Schneider instrument Co. Scientific Glass & Instruments, Inc. Sensor Technology, inc. Sprague Electric Co. Arthur H. Thomas Co. Tri-R instruments. Inc. Universal interloc. Inc. Utopia Instrument Co. Victory Engineering Corp. Wescan Instruments, Inc. Yellow Springs Instrument Co., Inc.
diaSysis CATHETOMETERS Central Scientific Co. The Ealing Corp. Eberbach Corp. Gaertner Scientific Corp. National Instrument Co.. Inc. Optical Industries, Inc. Pye Unicam Ltd. Ruska Instrument Corp. Sargent-Welch Scientific Co.
CELLS absorption American Instrument Co. Amersii. Inc.
72 LG AUGUST 1974
Biomed Instruments, Inc. Bio-Rad Laboratories Custom Glassblowing Service Dow Chemical U.S.A. Technilab Instruments, Inc.
dipole moment Balsbaugh Laboratories. Inc. Kahl Scientific Instrument Corp. Rutherford Research Products Co.
electrolytic Beckman Instruments, Inc. Camag. inc.
E. I, du Pont de Nemours & Co., Inc. Oynasciences Corp. Ionics, Inc, Pacific Engineering & Production Co. of Nevada Princeton Applied Research Corp. Sargent-Welch Scientific Co. Sprague Electric Co. Tracor, Inc.
electrophoresis Biomed instruments, inc. Bio-Rad Laboratories Buchler instruments Camag. inc. Corning Scientific Instruments E-C Apparatus Corp. Gelman Instrument Co. Instrumentation Laboratory Inc. Millipore Corp. ORTEC Incorporated Pen Kem Co. Pharmacia Fine Chemicals. Inc. Precision Cells, Inc, Quaracell Products, Inc. Shandon Southern Instruments, Inc. Smyth Precision Glass Mfg. Co. Carl Zeiss, Inc. Zeta-Meter, Inc.
micro American Instrument Co. Barnes Engineering Co. Coleman Instruments Digilab, Inc. Gilford Instrument Labs,. Inc. Harrick Scientific Corp. Heat Systems-Ultrasonics, Inc. Key Associates Precision Cells, Inc. Pyroceil Mfg. Co.. Inc. Quaracell Products. Inc. Savant Instruments, Inc. Smyth Precision Glass Mfg. Co. TCS Thermal American Fused Quartz Co. Carl Zeiss, Inc.
NMR Bruker Scientific, Inc. Digilab, Inc. Kontes Kontes/Martin. Inc. Lab Glass. Inc. Perkin-Elmer Corp. Varian Instrument Div. Wilmad Glass Co., Inc,
flow through
optical
Altex Scientific, Inc. American Instrument Co. Coleman instruments Gilford instrument Labs,, inc. Glenco Scientific, Inc, Harrick Scientific Corp. Heat Systems-Ultrasonics, Inc. Pacific Engineering & Production Co. of Nevada Philips Electronic Instruments, Inc. Precision Cells, Inc. Quaracell Products, inc. Sanda, Inc. Savant Instruments, Inc. Smyth Precision Glass Mfg. Co. , Southwestern Analytical Chemicals. Inc. TCS Thermal American Fused Quartz Co, G. K. Turner Associates Varian Instrument Div. Wilks Scientific Corp. Carl Zeiss, Inc.
American Instrument Co. Amersii. Inc. Andonian Cryogenics. Inc. Avco Everett Research Lab.. Beckman instruments. Inc. Calbiochem Gary Instruments Coleman instruments Diano Corp. The Ealing Corp. E.O.C.O.M. Esco Products F& J Scientific Farrand Optical Co.,, inc. Fischer &. Porter Co. Fisher Scientific Co. Fish-Schurrnan Corp, Gaertner Scientific Corp. Hamamatsu Corp. Hellige, Inc. Hellrna Cells, Inc. International Crystal Laboratories Janos Optical Corp. Japan Spectroscopic Co.. Ltd. Key Associates Klett Manufacturing Co.. inc. Kolimorgen Corp. Kontes E. Leitz. Inc. Lenox Instrument Co. Lightpath Cells, inc. Lovibond of America, Inc. Macbeth Color & Photometry Div. Markson Science, inc. Perkin-Elmer Corp. Perkin-Elmer, Ltd. Pomfret Research Optics Inc. Precision Cells, Inc. Pyroceil Mfg. Co., Inc. Quaracell Products. Inc. Rank Precision Industries Ltd., Analytical Div. Rudolph Instruments SAS Scientific Chemicals, Ltd. Savant Instruments, Inc. Scientific Cell Co.. Inc. Shirnadzu Seisakusho, Ltd. Smyth Precision Glass Mfg. Co. Syncor Products Co,, Inc. TCS Thermal American Fused Quartz Co. Wilks Scientific Corp. Worden Quartz Products Carl Zeiss, Inc.
fluorescence American Instrument Co. Chemplex Industries, Inc. Coleman instruments Markson Science, inc. Precision Cells, Inc. Pyroceil Mfg. Co.. Inc. Quaracell Products. Inc. Savant Instruments, inc. Smyth Precision Glass Mfg. Co. TCS Thermal American Fused Quartz Co. G, K, Turner Associates Carl Zeiss, Inc.
gas analysis Barnes Engineering Co. Beckman Instruments, Inc. Carle Instruments, Inc. Chemical Data Systems, Inc. Chemtronics, Inc. Chromalytics Corp. Coast Engineering Laboratory Digilab, Inc. Oynasciences Corp. Carlo Erba S.p.A. Gow-Mac Instrument Co, R. J. Harvey Instrument Corp. The Hays Corp. Heiima Cells, inc. Kent Cambridge Instrument Co. Leeds & Northrup Co. Manufacturers Engineering & Equipment Corp. Markson Science, Inc. Mine Safety Appliances Co. Perkin-Elmer Corp. Philips Electronic Instruments, Inc. Precision Forming & Stamping Co. Schuco Scientific Cell Co., Inc. Scientific Glass & Instruments, Inc. Shirnadzu Seisakusho. Ltd. Smyth Precision Glass Mfg. Co. Thermco Instrument Corp. Transidyne General Corp Varian instrument Div. Wilks Scientific Corp. Carl Zeiss. Inc.
photofluorometers — aisofluorometers American Instrument Co. Baird-Atorriic. Inc. Beckman Instruments, Inc. Biomed Instruments, Inc. Coleman Instruments Carlo Erba S.p.A. Farrand Optical Co., Inc. Fisher Scientific Co. Hellrna Cells, Inc. International Crystal Laboratories Lightpath Cells, Inc. Markson Science, Inc. Perkin-Elmer Corp, Phofovoit Corp, Scientific Ceil Co., Inc. Shirnadzu Seisakusho, Ltd. Smyth Precision Glass Mfg. Co.
LABORATORY
GUIDE
CHROMATOGRAPHY, COLUMN C H R O M A T O G R A P H Y , GAS
α Φ
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φ
Ε 3
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columns, open tubular
CHROMATOGRAPHY, GAS
Antek Instruments, Inc. Apollo Associates Applied Science Labs., Inc. Βίο-Cal Instrument Co. Boehringer Mannheim Corp. Buchler Instruments Cal-Glass For Research, Inc. Chromatronix Corning Glass Works Custom Glassblowing Service Demuth Glass Durrum Chemical Corp. Eck & Krebs, Inc. Electro-Nucleonics, Inc. Fischer & Porter Co. Gilson Medical Electronics, Inc. Glenco Scientific, Inc. Handy & Harman Tube Co. Hoefer Scientific Instruments Hruden Laboratory Products Instrumentation Specialities Co, Kaufman Glass Co. Kensington Scientific Corp. Kontes Kontes/Martin, Inc. Lab Glass, Inc. Laboratory Data Control Micromeritics I nstrument Corp. Molecular Separations, Inc. Nalge Co. Owens-Illinois, Inc. Oxford Laboratories Quartz General Corp, H. Reeve Angel & Co., Inc. Scientific Glass Engineering Pty., Ltd. The Separations Group Sigma Chemical Co. Technicraft International, Inc. Tudor Scientific Glass Co. Utopia Instrument Co. Wheaton Scientific
adsorbents
columns, support-coated, open tubular American Instrument Co. Chromatronix Electro-Nucleonics, Inc. Kontes Quartz General Corp. Scientific Glass Engineering Pty., Ltd.
fraction collectors Alltech Associates, Inc. Analabs, Inc. Barnes Engineering Co. Biomed Instruments, Inc. Brinkmann Instruments, Inc. Buchler Instruments Camag, Inc. Chatas Glass Co. Chemical Data Systems, Inc. Eberbach Corp. Carlo Erba S.p.A. Fischer & Porter Co. A. Gallenkamp and Co. Ltd. Gilson Medical Electronics, Inc. Instrumentation Specialities Co. Kensington Scientific Corp. Lab Glass, Inc. LKB Instruments, Inc. Luft Instruments, Inc. MISCO Scientific
See the WILKS SCIENTIFIC optical column moniter ad on page 47 Per kin-Elmer Corp. Phase Separations Ltd. Philips Electronic Instruments, Inc. Precision Forming & Stamping Co. Pye Unicam Ltd. Sanda, Inc. Savant Instruments, Inc. Scientific Glass & Instruments, Inc. Scientific Manufacturing Industries Toyo Kagaku Sangyo Co. Ltd. Trienco Utopia Instrument Co. Wilks Scientific Corp.
82 LG AUGUST 1974
Alltech Associates, Inc. Analabs, Inc. Analytical Instrument Development, Inc. Antek Instruments, Inc. Applied Science Labs., Inc. Barnebey-Cheney The Bendix Corp., Process Instruments Div. Bio-Rad Laboratories Brinkmann Instruments, Inc. Chemical· Data Systems, Inc. Chemical Research Services, Inc. Coast Engineering Laboratory
See the VARIAN gas chromatograph ad on page 19 Carlo Erba S.p.A. Fisher Scientific Co. Floridin Co. W. R. Grace & Co. W. A. Hammond Drierite Co. Hewlett-Packard, Avondale Div. Hruden Laboratory Products ICN Life Sciences Group Johns-Manville Lachat Chemicals, Inc. MC/B Manufacturing Chemists MG Scientific Gases Packard Instrument Co., Inc. Perkin-Elmer Corp. Perkin-Elmer, Ltd. Phase Separations Ltd. Pierce Chemical Co. Prolabo Regis Chemical Co. The Separations Group Supelco, Inc. Tracor, Inc. Varian Instrument Div. Waters Associates Inc.
attenuators, automatic Applied Automation, Inc. Carle Instruments, Inc. Chemical Data Systems, Inc. Condyne Instruments Carlo Erba S.p.A. Fisher Scientific Co. Hewlett-Packard, Avondale Div. Luft Instruments, Inc. Packard Instrument Co., Inc. Perkin-Elmer Corp. Phase Separations Ltd. Process Analyzers, Inc. (Tex.) Soltec Corp. Tracor, Inc.
chromatographs, gas, argon ionization detecting Beckman Instruments, Inc. Controlled Atmosphere, Inc. Glowall Corp. Lachat Chemicals, Inc. Nuclear Sources & Services, Inc, Packard Instrument Co., Inc. Perkin-Elmer, Ltd. Pye Unicam Ltd. Shimadzu Seisakusho, Ltd. Soltec Corp.
chromatographs, gas, coulometric detecting Antek Instruments, Inc. Controlled Atmosphere, Inc. DOHRMANN Div. Envirotech Corp. Soltec Corp. Utopia Instrument Co.
chromatographs, gas, cryogenic American Instrument Co. Antek Instruments, Inc. Applied Automation, Inc. Beckman Instruments, Inc. The Bendix Corp., Process Instruments Div.
Controlled Atmosphere, Inc. Carlo Erba S.p.A. Fisher Scientific Co. Glowall Corp. Hewlett-Packard, Avondale Div. Lachat Chemicals, Inc. Packard Instrument Co., Inc. Perkin-Elmer Corp. Process Analyzers, Inc. (Tex.) Soltec Corp. Tracor, Inc. Varian Instrument Div.
chromatographs, gas, dual column Ace Glass, Inc. American Instrument Co. Antek Instruments, Inc. Applied Automation, Inc. Beckman Instruments, Inc. The Bendix Corp., Process Instruments Div. Carle Instruments, Inc. Chemical Data Systems, Inc. Chromalytics Corp. Controlled Atmosphere, Inc. Core Laboratories, Inc. Carlo Erba S.p.A. Finnigan Corp. Fisher Scientific Co. Glowall Corp. Gow-Mac Instrument Co. Hewlett-Packard, Avondale Div. Matheson Gas Products Packard Instrument Co., Inc. Perkin-Elmer Corp. Perkin-Elmer, Ltd. Phase Separations Ltd. Process Analyzers, Inc. (Tex.) Pye Unicam Ltd. Research Assistants Corp. Shimadzu Seisakusho, Ltd. Soltec Corp. Thermco Instrument Corp. Tracor. Inc. United Technical Corp. Utopia Instrument Co. Varian Instrument Div.
See the CARLE INSTRUMENTS, INC. gas chromatograph ad on page 93 Japan Spectroscopic Co., Ltd. Lachat Chemicals, Inc. Packard Instrument Co., Inc. Perkin-Elmer Corp. Perkin-Elmer, Ltd. Phase Separations Ltd. Process Analyzers, Inc. (Tex.) Pye Unicam Ltd. Research Assistants Corp. Shimadzu Seisakusho, Ltd. Soltec Corp. Tracor, Inc. Utopia Instrument Co. Varian Instrument Div. WEMCO Instrumentation Co.
chromatographs, gas, micro cross section detecting Antek Instruments, Inc. The Bendix Corp., Process Instruments Div. Controlled Atmosphere, Inc. Carlo Erba S.p.A. Glowall Corp. Ionics Research, Inc. Nuclear Sources & Services, Inc. Perkin-Elmer, Ltd. Phase Separations Ltd. Shimadzu Seisakusho, Ltd. Soltec Corp. Tracor, Inc. Varian Instrument Div.
chromatographs, gas, electron capture detecting
chromatographs, gas, for pesticide analysis
American Instrument Co. Analog Technology Corp. Analytical Instrument Development, Inc. Antek Instruments, Inc. Baird-Atomic, Inc. Beckman Instruments, Inc. The Bendix Corp., Process Instruments Div. Controlled Atmosphere, Inc. Carlo Erba S.p.A. Finnigan Corp. Fisher Scientific Co. Glowall Corp. Hewlett-Packard, Avondale Div. Ionics Research, Inc. Japan Spectroscopic Co., Ltd. Lachat Chemicals, Inc. Nuclear Sources & Services, Inc. Packard Instrument Co., Inc. Perkin-Elmer Corp. Perkin-Elmer, Ltd. Pye Unicam Ltd. Shimadzu Seisakusho, Ltd. Soltec Corp. Tracor, Inc. Utopia Instrument Co. Varian Instrument Div.
American Instrument Co. Analytical Instrument Development, Inc. Antek Instruments, Inc. Beckman Instruments, Inc. The Bendix Corp., Process Instruments Div. Controlled Atmosphere, Inc. DOHRMANN Div. Envirotech Corp. Carlo Erba S.p.A. Finnigan Corp. Fisher Scientific Co. Glowall Corp. Hewlett-Packard, Avondale DivPackard Instrument Co., Inc. Perkin-Elmer Corp. Perkin-Elmer, Ltd. Phase Separations Ltd. Pye Unicam Ltd. Shimadzu Seisakusho, Ltd. Soltec Corp. Tracor, Inc. Utopia Instrument Co. Varian Instrument Div.
chromatographs, gas, flame ionization detecting
American Instrument Co. The Bendix Corp., Process Instruments Div. Controlled Atmosphere, Inc. Carlo Erba S.p.A. Packard Instrument Co., Inc. Perkin-Elmer Corp. Phase Separations Ltd. Pye Unicam Ltd. Shimadzu Seisakusho, Ltd. Soltec Corp. Tracor, Inc. Varian Instrument Div.
American Instrument Co. Analog Technology Corp. Analytical Instrument Development, Inc. Antek Instruments, Inc. Applied Automation, Inc. Beckman Instruments, Inc. The Bendix Corp., Process Instruments Div. Carle Instruments, Inc. Controlled Atmosphere, Inc. DOHRMANN Div. Envirotech Corp. Carlo Erba S.p.A. Finnigan Corp. Fisher Scientific Co. Glowall Corp. Gow-Mac Instrument Co. Hewlett-Packard, Avondale Div. InterOcean Systems, Inc.
chromatographs, gas, preparative type
chromatographs, gas, thermal conductivity detecting American Instrument Co. Analytical Instrument Development, Inc. Antek Instruments, Inc. Applied Automation, Inc. A.R.F. Products, Inc. Beckman instruments, Inc. The Bendix Corp., Process Instruments Div.
LABORATORY
GUIDE
CHROMATOGRAPHY, GAS CHROMATOGRAPHY, GAS Bowers Instrument Co. Carle Instruments, Inc. Chemical Data Systems, Inc. Chromalytics Corp. Condyne Instruments Controlled Atmosphere, inc. Core Laboratories, inc. DOHRMANN Div. Envirotech Corp. Carlo ErbaS.p.A. Fisher Scientific Co. Gow-Mac Instrument Co. Hewlett-Packard, Avondale Div. Honeywell, Inc., Process Control Div. M/K Systems, inc. Packard Instrument Co., inc. Perkin-Elmer Corp. Perkin-Elmer, Ltd. Phase Separations Ltd. Process Analyzers, inc. (Tex.) Pye Unicam Ltd. Research Assistants Corp. Shimadzu Seisakusho, Ltd. Soltec Corp. Thermco instrument Corp. Tracor, Inc, United Technical Corp. Utopia instrument Co. Varian Instrument Div.
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chromatographs, gas, thermistor detecting American Instrument Co. Analytical Instrument Development, inc. Antek instruments, Inc. Applied Automation, Inc. The Bendix Corp., Process Instruments Div. Carle Instruments, Inc. Condyne Instruments Controlled Atmosphere, Inc. Carlo ErbaS.p.A. A. Galienkarnp and Co. Ltd. Gow-Mac Instrument Co. Perkin-Elmer, Ltd. Phase Separations Ltd. Sottec Corp, Tracor. inc. United Technical Corp, Varian Instrument Div.
chromatographs, gas and mass spectrometers, complete system ΑΕΙ Scientific Apparatus inc. Associated Electrical industries international Ltd. The Bendix Corp., Process instruments Div, Controlled Atmosphere, Inc. CVC Products, Inc. E. I. du Pont de Nemours & Co., Inc. Extranuclear Labs., Inc. Finnigan Corp. Hewlett-Packard, Avondale Div. Japan Spectroscopic Co., Ltd. LKB Instruments, Inc. Nuclide Corp, Nuclide Corp., AGV Div. Perkin-Elmer Corp. Perkin-Elmer, Ltd. Process Anaiyzers, Inc. (Tex.) Process Analyzers, Inc. (Calif.) Pye Unicam Ltd. Scientific Resources, Inc. Soltec Corp. Varian M a t / U S . Operations
columns Ace Glass, inc. Ailtech Associates, inc. Analabs, înc. Analytical Instrument Development, inc. Antek Instruments, inc. Applied Automation, inc. Applied Science Labs., Inc. Beckman Instruments, Inc. The Bellacour Co. Bellco Glass, Inc. The Bendix Corp,, Process Instruments Div. Chemical Data Systems, inc. Chemical Research Services, Inc. Chromalytics Corp, Coast Engineering Laboratory Corning Glass Works Custom Glassbiowing Service Eck & Krebs, inc. Carlo ErbaS.p.A. Fischer & Porter Co. Fisher Scientific Co. Glowall Corp, Greiner Scientific Corp. Hewlett-Packard, Avondale Div. ICN Life Sciences Group
86 LG AUGUST 1974
Kontes Kontes/Martin, Inc. LabGiass, inc. Lachat Chemicals, inc. MISCO Scientific Packard Instrument Co., inc. Perkin-Elmer Corp. Perkin-Eimer, Lid. Phase Separations Ltd. Precision Forming & Stamping Co. Process Analyzers, inc. (Tex.) Pye Unicam Ltd. Quartz General Corp. Regis Chemical Co. Scientific Glass Engineering Pty., Ltd. The Separations Group Shimadzu Seisakusho, Ltd. Supeico, inc. Tracor, inc. Tudor Scientific Gtass Co. United Technical Corp. Varian instrument Div. Wheaton Scientific
Chemical Data Systems, Inc. Controlled Atmosphere, Inc. DOHRMANN Div. Envirotech Corp. E-C Apparatus Corp. Carlo ErbaS.p.A. Ester line Angus F & J Scientific Fisher Scientific Co. Gouid, ï n c , instrument Systems Div. The Hays Corp. Laboratory Data Control Leeds & Northrup Co. Linear Instruments Corp. Perkin-Elmer Corp. Phase Separations Ltd. Photovolt Corp. Pye Unicam Ltd. Sargent-Welch Scientific Co. Shimadzu Seisakusho, Ltd. Simpson Electric Co. Soltec Corp. Tracor, inc. Utopia instrument Co. Varian Instrument Div.
computer readout and simulation
integrators, digital readout
Adams-Smith, Inc. American instrument Co, Applied Automation, inc. Beckman instruments, inc. The Bendix Corp., Process instruments Div. Chemical Data Systems, inc. Computer Inquiry Systems, Inc. Data Graphics Corp. E. I. du Pont de Nemours & Co., Inc. Electronic Associates, Inc, Fluidyne Instrumentation Honeywell Test Instruments Div. Non-Linear Systems. Inc. Olson Laboratories, inc. Perkin-Elmer Corp. Process Anaiyzers, Inc. flex.) Pye Unicam Ltd. Ouinton instruments Shimadzu Seisakusho, Ltd. Soitec Corp. TCSystems, inc. Tektronix, Inc. Varian Instrument Div.
flow programmers Analabs, Inc. Chemical Data Systems, inc. Cario ErbaS.p.A. Luft instruments, inc. Perkin-Elmer, Ltd. Phase Separations Ltd. Pye Unicam Ltd. Shimadzu Seisakusho, Ltd.
infrared analyzers for chromatographs Beckman Instruments, Inc. Siock Engineering, Inc. Digiiab, inc. E.O.C.O.M. Harrick Scientific Corp. R. J. Harvey instrument Corp.
See the WILKS SCIENTIFIC infrared analyzer for c h r o m a t o g r a p h ad on page 47 Japan Spectroscopic Co., Ltd, Norcon Instruments Inc. Perkin-Elmer Corp. Pye Unicam Ltd. Scientific Resources, Inc, Shimadzu Seisakusho, Ltd. Spectral imaging. Inc. Wilks Scientific Corp.
integrating recorders American instrument Co. Antek Instruments, inc. Beckman Instruments, Inc. The Bendix Corp., Process instruments Div. Biomed instruments, Inc. Bristol Div. of Acco
Adams-Smith, inc. American Instrument Co. Antek Instruments, inc. Beckman instruments, inc. The Bendix Corp,, Process instruments Div. Biomed instruments, Inc. Chemical Data Systems, inc. Columbia Scientific industries Data Graphics Corp. Disc Instruments, Inc. Carlo ErbaS.p.A. • Fluidyne Instrumentation Hewlett-Packard, Avondale Div. instrumentation Specialities Co. Keithley Instruments, Inc. Perkin-Elmer Corp. Process Anaiyzers. Inc. (Tex.) Pye Unicam Ltd. Royson Engineering Co. Scientific Industries, Inc. Shimadzu Seisakusho. Ltd. Soitec Corp, Systems instruments Research, Inc. TC Systems, Inc. Toledo Scale Tracor, Inc. Utopia Instrument Co. Valley Forge Instrument Co,, Inc. Varian Instrument Div.
integrators for strip-chart recorders American Instrument Co. Antek instruments, Inc. Beckman Instruments, inc. Biomed Instruments, Inc. Brinkmann Instruments, Inc. Bristol Div. of Acco Disc Instruments, Inc. DOHRMANN Div. Envirotech Corp. Carlo ErbaS.p.A. Esîerline Angus Giowaii Corp. Gould, inc., instrument Systems Div. Linear instruments Corp. Perkin-Eimer Corp, Photovolt Corp. Pye Unicam Ltd. Royson Engineering Co. Scientific Industries, Inc. Shimadzu Seisakusho, Ltd. Soltec Corp. Tracor, Inc. United Technical Corp, Utopia instrument Co. Varian instrument Div.
mass spectrometer adapters ΑΕΙ Scientific Apparatus Inc. The Bendix Corp., Process Instruments Div, Chemical Data Systems, Inc. CVC Products, inc. E. I, du Pont de Nemours & Co., Inc, Electronic Associates, Inc. Extranuclear Labs., inc. Finnigan Corp. Glowall Corp, R.J- Harvey instrument Corp. Nuclide Corp. Nuclide Corp., AGV Div. Perkin-Eimer Corp. Perkin-Eimer, Ltd. Process Analyzers, Inc, (Tex.) Process Analyzers, Inc. (Calif.) Scientific Resources, Inc. Soltec Corp. Statham Instruments, Inc.
pyrolysis apparatus (for sampling) American instrument Co. Analabs, inc. Antek Instruments, inc. Barnes Engineering Co. The Bendix Corp., Process Instruments Div. Chemical Data Systems, Inc. Chromalytics Corp, DOHRMANN Div. Envirotech Corp. Carlo ErbaS.p.A. Glowall Corp. Hamilton Co. Hewlett-Packard, Avondale Div. Packard instrument Co.. Inc. Perkin-Eimer Corp. Phase Separations Ltd, Pye Unicam Ltd. Research Assistants Corp. Scientific Glass Engineering Pty., Ltd. Shimadzu Seisakusho, Ltd, Tracor, Inc. United Electric Controls Co. Utopia Instrument Co. Varian Instrument Div.
sample splitters, collector Ailtech Associates, inc. American instrument Co, Analabs, Inc. Beckman instruments, inc. Chemical Data Systems, inc. CVC Products, Inc. DOHRMANN Div. Envirotech Corp. Carlo Erba S.p.A. Glowall Corp. Hewlett-Packard, Avondale Div. Lab Glass, Inc. Laboratory Data Control Packard instrument Co., inc. Perkin-Eimer, Lid. Philips Electronic instruments, inc. Pye Unicam LtdScientific Glass Engineering Pty., Ltd. Tracor, inc. Trienco Varian Instrument Div,
sample splitters, inlet Atltech Associates, Inc. American Instrument Co. Anaiabs, inc. Antek Instruments, inc. Beckman Instruments, inc. The Bendix Corp., Process instruments Div. DOHRMANN Div. Envirotech Corp. Carlo ErbaS.p.A. Glowall Corp. Hamilton Co. Hewlett-Packard, Avondale Div. LabGiass, inc. Packard Instrument Co,. Inc, Perkin-Elmer Corp. Scientific Giass Engineering Pty., Ltd. Shimadzu Seisakusho. Ltd, Tracor, inc. Varian Instrument Div.
sampling systems for injection Ailtech Associates, Inc. American Instrument Co. Analabs, Inc. Analytical Instrument Development, Inc. Antek Instruments, Inc. Applied Automation, inc. Beckman instruments, inc. The Bendix Corp., Process Instruments Div. Carle instruments, inc. Chemcon, inc. Chemical Data Systems. Inc. Chromatronix Condyne Instruments Disc Instruments, inc. DOHRMANN Div. Envirotech Corp. Carlo ErbaS.p.A. Glenco Scientific, Inc. Giowaii Corp. Hamilton Co. R. J. Harvey instrument Corp. Hewlett-Packard, Avondale Div. LabGiass, inc. Packard instrument Co., inc. Perkin-Eimer Corp. Perkin-Elmer, Ltd. Phase Separations Ltd. Precision Sampling Corp, Pye Unicam Ltd. Scientific Glass Engineering Pty., Ltd. Shandon Southern Instruments. Inc.
LABORATORY
GUIDE
CHROMATOGRAPHY, COLUMN C H R O M A T O G R A P H Y , GAS
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columns, open tubular
CHROMATOGRAPHY, GAS
Antek Instruments, Inc. Apollo Associates Applied Science Labs., Inc. Βίο-Cal Instrument Co. Boehringer Mannheim Corp. Buchler Instruments Cal-Glass For Research, Inc. Chromatronix Corning Glass Works Custom Glassblowing Service Demuth Glass Durrum Chemical Corp. Eck & Krebs, Inc. Electro-Nucleonics, Inc. Fischer & Porter Co. Gilson Medical Electronics, Inc. Glenco Scientific, Inc. Handy & Harman Tube Co. Hoefer Scientific Instruments Hruden Laboratory Products Instrumentation Specialities Co, Kaufman Glass Co. Kensington Scientific Corp. Kontes Kontes/Martin, Inc. Lab Glass, Inc. Laboratory Data Control Micromeritics I nstrument Corp. Molecular Separations, Inc. Nalge Co. Owens-Illinois, Inc. Oxford Laboratories Quartz General Corp, H. Reeve Angel & Co., Inc. Scientific Glass Engineering Pty., Ltd. The Separations Group Sigma Chemical Co. Technicraft International, Inc. Tudor Scientific Glass Co. Utopia Instrument Co. Wheaton Scientific
adsorbents
columns, support-coated, open tubular American Instrument Co. Chromatronix Electro-Nucleonics, Inc. Kontes Quartz General Corp. Scientific Glass Engineering Pty., Ltd.
fraction collectors Alltech Associates, Inc. Analabs, Inc. Barnes Engineering Co. Biomed Instruments, Inc. Brinkmann Instruments, Inc. Buchler Instruments Camag, Inc. Chatas Glass Co. Chemical Data Systems, Inc. Eberbach Corp. Carlo Erba S.p.A. Fischer & Porter Co. A. Gallenkamp and Co. Ltd. Gilson Medical Electronics, Inc. Instrumentation Specialities Co. Kensington Scientific Corp. Lab Glass, Inc. LKB Instruments, Inc. Luft Instruments, Inc. MISCO Scientific
See the WILKS SCIENTIFIC optical column moniter ad on page 47 Per kin-Elmer Corp. Phase Separations Ltd. Philips Electronic Instruments, Inc. Precision Forming & Stamping Co. Pye Unicam Ltd. Sanda, Inc. Savant Instruments, Inc. Scientific Glass & Instruments, Inc. Scientific Manufacturing Industries Toyo Kagaku Sangyo Co. Ltd. Trienco Utopia Instrument Co. Wilks Scientific Corp.
82 LG AUGUST 1974
Alltech Associates, Inc. Analabs, Inc. Analytical Instrument Development, Inc. Antek Instruments, Inc. Applied Science Labs., Inc. Barnebey-Cheney The Bendix Corp., Process Instruments Div. Bio-Rad Laboratories Brinkmann Instruments, Inc. Chemical· Data Systems, Inc. Chemical Research Services, Inc. Coast Engineering Laboratory
See the VARIAN gas chromatograph ad on page 19 Carlo Erba S.p.A. Fisher Scientific Co. Floridin Co. W. R. Grace & Co. W. A. Hammond Drierite Co. Hewlett-Packard, Avondale Div. Hruden Laboratory Products ICN Life Sciences Group Johns-Manville Lachat Chemicals, Inc. MC/B Manufacturing Chemists MG Scientific Gases Packard Instrument Co., Inc. Perkin-Elmer Corp. Perkin-Elmer, Ltd. Phase Separations Ltd. Pierce Chemical Co. Prolabo Regis Chemical Co. The Separations Group Supelco, Inc. Tracor, Inc. Varian Instrument Div. Waters Associates Inc.
attenuators, automatic Applied Automation, Inc. Carle Instruments, Inc. Chemical Data Systems, Inc. Condyne Instruments Carlo Erba S.p.A. Fisher Scientific Co. Hewlett-Packard, Avondale Div. Luft Instruments, Inc. Packard Instrument Co., Inc. Perkin-Elmer Corp. Phase Separations Ltd. Process Analyzers, Inc. (Tex.) Soltec Corp. Tracor, Inc.
chromatographs, gas, argon ionization detecting Beckman Instruments, Inc. Controlled Atmosphere, Inc. Glowall Corp. Lachat Chemicals, Inc. Nuclear Sources & Services, Inc, Packard Instrument Co., Inc. Perkin-Elmer, Ltd. Pye Unicam Ltd. Shimadzu Seisakusho, Ltd. Soltec Corp.
chromatographs, gas, coulometric detecting Antek Instruments, Inc. Controlled Atmosphere, Inc. DOHRMANN Div. Envirotech Corp. Soltec Corp. Utopia Instrument Co.
chromatographs, gas, cryogenic American Instrument Co. Antek Instruments, Inc. Applied Automation, Inc. Beckman Instruments, Inc. The Bendix Corp., Process Instruments Div.
Controlled Atmosphere, Inc. Carlo Erba S.p.A. Fisher Scientific Co. Glowall Corp. Hewlett-Packard, Avondale Div. Lachat Chemicals, Inc. Packard Instrument Co., Inc. Perkin-Elmer Corp. Process Analyzers, Inc. (Tex.) Soltec Corp. Tracor, Inc. Varian Instrument Div.
chromatographs, gas, dual column Ace Glass, Inc. American Instrument Co. Antek Instruments, Inc. Applied Automation, Inc. Beckman Instruments, Inc. The Bendix Corp., Process Instruments Div. Carle Instruments, Inc. Chemical Data Systems, Inc. Chromalytics Corp. Controlled Atmosphere, Inc. Core Laboratories, Inc. Carlo Erba S.p.A. Finnigan Corp. Fisher Scientific Co. Glowall Corp. Gow-Mac Instrument Co. Hewlett-Packard, Avondale Div. Matheson Gas Products Packard Instrument Co., Inc. Perkin-Elmer Corp. Perkin-Elmer, Ltd. Phase Separations Ltd. Process Analyzers, Inc. (Tex.) Pye Unicam Ltd. Research Assistants Corp. Shimadzu Seisakusho, Ltd. Soltec Corp. Thermco Instrument Corp. Tracor. Inc. United Technical Corp. Utopia Instrument Co. Varian Instrument Div.
See the CARLE INSTRUMENTS, INC. gas chromatograph ad on page 93 Japan Spectroscopic Co., Ltd. Lachat Chemicals, Inc. Packard Instrument Co., Inc. Perkin-Elmer Corp. Perkin-Elmer, Ltd. Phase Separations Ltd. Process Analyzers, Inc. (Tex.) Pye Unicam Ltd. Research Assistants Corp. Shimadzu Seisakusho, Ltd. Soltec Corp. Tracor, Inc. Utopia Instrument Co. Varian Instrument Div. WEMCO Instrumentation Co.
chromatographs, gas, micro cross section detecting Antek Instruments, Inc. The Bendix Corp., Process Instruments Div. Controlled Atmosphere, Inc. Carlo Erba S.p.A. Glowall Corp. Ionics Research, Inc. Nuclear Sources & Services, Inc. Perkin-Elmer, Ltd. Phase Separations Ltd. Shimadzu Seisakusho, Ltd. Soltec Corp. Tracor, Inc. Varian Instrument Div.
chromatographs, gas, electron capture detecting
chromatographs, gas, for pesticide analysis
American Instrument Co. Analog Technology Corp. Analytical Instrument Development, Inc. Antek Instruments, Inc. Baird-Atomic, Inc. Beckman Instruments, Inc. The Bendix Corp., Process Instruments Div. Controlled Atmosphere, Inc. Carlo Erba S.p.A. Finnigan Corp. Fisher Scientific Co. Glowall Corp. Hewlett-Packard, Avondale Div. Ionics Research, Inc. Japan Spectroscopic Co., Ltd. Lachat Chemicals, Inc. Nuclear Sources & Services, Inc. Packard Instrument Co., Inc. Perkin-Elmer Corp. Perkin-Elmer, Ltd. Pye Unicam Ltd. Shimadzu Seisakusho, Ltd. Soltec Corp. Tracor, Inc. Utopia Instrument Co. Varian Instrument Div.
American Instrument Co. Analytical Instrument Development, Inc. Antek Instruments, Inc. Beckman Instruments, Inc. The Bendix Corp., Process Instruments Div. Controlled Atmosphere, Inc. DOHRMANN Div. Envirotech Corp. Carlo Erba S.p.A. Finnigan Corp. Fisher Scientific Co. Glowall Corp. Hewlett-Packard, Avondale DivPackard Instrument Co., Inc. Perkin-Elmer Corp. Perkin-Elmer, Ltd. Phase Separations Ltd. Pye Unicam Ltd. Shimadzu Seisakusho, Ltd. Soltec Corp. Tracor, Inc. Utopia Instrument Co. Varian Instrument Div.
chromatographs, gas, flame ionization detecting
American Instrument Co. The Bendix Corp., Process Instruments Div. Controlled Atmosphere, Inc. Carlo Erba S.p.A. Packard Instrument Co., Inc. Perkin-Elmer Corp. Phase Separations Ltd. Pye Unicam Ltd. Shimadzu Seisakusho, Ltd. Soltec Corp. Tracor, Inc. Varian Instrument Div.
American Instrument Co. Analog Technology Corp. Analytical Instrument Development, Inc. Antek Instruments, Inc. Applied Automation, Inc. Beckman Instruments, Inc. The Bendix Corp., Process Instruments Div. Carle Instruments, Inc. Controlled Atmosphere, Inc. DOHRMANN Div. Envirotech Corp. Carlo Erba S.p.A. Finnigan Corp. Fisher Scientific Co. Glowall Corp. Gow-Mac Instrument Co. Hewlett-Packard, Avondale Div. InterOcean Systems, Inc.
chromatographs, gas, preparative type
chromatographs, gas, thermal conductivity detecting American Instrument Co. Analytical Instrument Development, Inc. Antek Instruments, Inc. Applied Automation, Inc. A.R.F. Products, Inc. Beckman instruments, Inc. The Bendix Corp., Process Instruments Div.
LABORATORY
GUIDE
CHROMATOGRAPHY, LIQUID CHROMATOGRAPHY, PAPER Sanda. Inc. Schoeffel Instrument Corp. Soltec Corp, TCS
Tracor, inc.
Utopia instrument Co. Varian instrument Div. Car! Zeiss, inc.
drop counters, for fraction collectors Brinkmann instruments. Inc. Buchler Instruments Carlo Erba S,p.A. Giison Medical Electronics, Inc. instrumentation Specialities Co. Kensington Scientific Corp. Lab Giass, inc. LK8 instruments, inc. MISCO Scientific Scientific Glass & Instruments, Inc. Scientific Manufacturing Industries Technicon Industrial Systems Toyo Kagaku Sangyc Co. Ltd,
eluate concentrators
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Biomed instruments, inc. Βίο-Rad Laboratories Dow Chemical U.S.A. Trienco
eluate desalters Biomed Instruments, Inc. Bio-Rad Laboratories Dow Chemical U.S.A.
gradient mixers Altex Scientific, Inc. Biomed Instruments, Inc. Buchler Instruments Chromatronix Custom Glassblowing Service E. I. du Pont de Nemours & Co., Inc. E-C Apparatus Corp. Electrothermal Engineering, Lid. Carlo Erba S.p.A. Giison Medical Electronics, inc. Glenco Scientific, Inc. Giobal Process Equipment, inc. Harvard Apparatus Co., Inc. Kontes Kontes/Martin, Inc. Kraft Apparatus, Inc. Laboratory Data Control LKB Instruments, Inc. Molecular Separations, Inc. Patentrol Corp. Perkin-Elmer Corp. Pharmacia Fine Chemicals, inc. Quartz General Corp. Charles Ross & Son Co. Tracor, Inc. Varian Instrument Div. Waters Associates Inc.
gradient pumps Altex Scientific, inc. Analabs, inc. Beckman Instruments, inc. Buchler Instruments Chromatronix E. I. du Pont de Nemours & Co., Inc. Carlo Erba S.p.A. Extracorporeal Medical Specialties, Inc. FEDESCO Fluid Metering, inc. Greiner Scientific Corp. Harvard Apparatus Co., Inc. Hewieit-Packard, Avondale Div. Instrumentation Specialities Co. Japan Spectroscopic Co., Lid, Kraft Apparatus, inc. Laboratory Data Control LKB instruments, Inc. Mtcromeritics Instrument Corp. Milton Roy Co. Patentrol Corp. Perkin-Elmer Corp. Pharmacia Fine Chemicals, Inc. Philips Electronic Instruments, Inc. Pye Unicam Lid. Razei Scientific instruments. Inc. Sage Instruments Scientific Industries, Inc. Sigmamotor, inc. Tracor, inc. Utopia Instrument Co. Varian Instrument Div. The VirTisCo. Waters Associates Inc.
92 LG AUGUST 1974
ion exchange resins Aitex Scientific. Inc. Analabs, inc. J. T. Baker Chemical Co. Barnstead Co. Bio-Cal Instrument Co. Bio-Rad Laboratories Brinkmann Instruments, Inc. Durrum Chemical Carp. Durrum Instrument Corp. EM Laboratories, Inc. Fisher Scientific Co. Floridin Co. Hamilton Co. Hewlett-Packard, Avondale Div. Hruden Laboratory Products ICN Isotope & Nuclear Div. iCN Life Sciences Group ion Exchange Products, Inc. ionac Chemical Co. Ionics, Inc. Mallinckrodt Chemical Works, Science Products Div. MC/B Manufacturing Chemists Perkin-Elmer Corp. Pharmacia Fine Chemicals, Inc. Pierce Chemical Co. Rohm and Haas Co. The Separations Group SERFiLCO Terra-Marine Bioresearch Tracor, Inc. Utopia instrument Co. Varian Instrument Div. Waters Associates Inc.
refractive index Altex Scientific, Inc. Analabs, Inc. Applied Automation, Inc. Chromatronix E. I. du Pont de Nemours & Co., Inc. Glenco Scientific, inc. Laboratory Data Control Micromeritics I nstrument Corp. Milton Roy Co. Perkin-Elmer Corp. Pharmacia Fine Chemicals, Inc. Tracor, Inc. Utopia Instrument Co. Varian instrument Div. Waters Associates inc.
CHROMATOGRAPHY, liquid-liquid Altex Scientific, inc. Applied Automation, Inc. The Bellacour Co. Brinkmann instruments, Inc. Chromatronix E. i. du Pont de Nemours & Co,, inc. E-C Apparatus Corp. EM Laboratories, Inc. Glenco Scientific, Inc. Hewlett-Packard, Avondale Div. Laboratory Data Control LKB Instruments, Inc. MDA Scientific, Inc. Molecular Separations, Inc. Perkin-Elmer Corp, Phase Separations Ltd. Philips Eiectronic Instruments, Inc. Pye Unicam Ltd. H. Reeve Angel & Co., Inc. Sanda, Inc. Scientific Glass & Instruments, Inc. The Separations Group Soltec Corp. TCS Tracor, inc. Utopia instrument Co. Varian Instrument Div. Waters Associates Inc.
CHROMATOGRAPHY, MICROPARTICULATE BED adsorbents Barnebey-Cheney Bio-Rad Laboratories EM Laboratories, Inc. Fforidin Co. W, R.Grace S Co. ICN Life Sciences Group Laboratory Data Control Phase Separations Ltd, The Separations Group Ivan Sorvall, Inc. Waters Associates Inc.
equipment
tubes
ivan Sorvali, Inc.
Ace Glass, Inc. Altex Scientific, Inc. Chromatronix Corning Glass Works Custom Glassblowing Service Durrum Chemical Corp. Cario Erba S.p.A. Fischer & Porter Co. Glenco Scientific, Inc. Hruden Laboratory Products Instrumentation Specialities Co. Kaufman Glass Co. Kontes Lab Glass, Inc. Perkin-Elmer Corp. Scientific Glass Engineering Pty., Ltd. SGA Scientific inc. Supelco, Inc. Superior Tube Co.
CHROMATOGRAPHY, PAPER
ultraviolet absorption Altex Scientific, Inc. Analabs, Inc. Applied Automation. Inc. Biomed Instruments, Inc. Chromatronix Gilford Instrument Labs., Inc. Giison Medical Electronics, Inc. Gienco Scientific, inc. Harrick Scientific Corp. Instrumentation Specialities Co. Japan Spectroscopic Co., Lid. Laboratory Data Control LKB Instruments, Inc. Micromeritics Instrument Corp. Molecular Separations, Inc. Perkin-Elmer Corp, Pharmacia Fine Chemicals, Inc. Quaracell Products, Inc. Schoeffel Instrument Corp. Toyo Kagaku Sangyo Co. Ltd. Tracor, inc. Uîopia instrument Co. Varian instrument Div. Waters Associates inc.
Photovolt Corp. Rigaku/USA Schoefiel Instrument Corp. Science Spectrum. Inc. Scientific Industries, Inc. Toyo Kagaku Sangyo Co, Ltd. Carl Zeiss, Inc.
desalters Biomed Instruments, Inc. Shandon Southern Instruments, Inc.
drying ovens Blue M Electric Co. Wm. Soekel& Co., Inc. Brinkmann Instruments, Inc. Despatch Oven Co. Harry W. Dietert Co. Fisher Scientific Co. A. Gallenkamp and Co. Ltd. GCA/Precision Scientific Gelman Instrument Co. Gruenberg Oven Co., Inc. Helntcke Instruments Co. Hotpack Corp. HydorThermeCorp. Industrial Systems Corp. Lab Giass. Inc. Lindberg PolyScience Corp. Precision Quincy Corp, Shandon Southern Instruments, Inc. Thermolyne Corp. Arthur H. Thomas Co. Toyo Kagaku Sangyo Co. Ltd. WSF Industries, inc.
filter paper Ace Giass, inc. Bico, Inc. Brinkmann Instruments, Inc, CCM; Schaar Scientific, Inc. Fisher Scientific Co. Gelman Instrument Co. Pallflex Products Corp. Prolabo Rascher & Betzold, inc. H. Reeve Angei & Co., inc. Schleicher S Schueii, Inc. SERFiLCO Terrtss-Consolidated Industries Arthur H. Thomas Co. Toyo Kagaku Sangyo Co. Ltd. Utopia Instrument Co. Wilson Diagnostics, Inc.
chromatographs, paper
indicator sprays
Ace Giass, Inc. Fisher Scientific Co. Forro Scientific Co. Gelman Instrument Co, Kensington Scientific Corp. MG Scientific Gases MISCO Scientific H, Reeve Angel & Co., Inc. Schleicher & Schuell. Inc. Schoeffel Instrument Corp, Scientific Manufacturing Industries Shandon Southern Instruments. Inc. Arthur H. Thomas Co. Toyo Kagaku Sangyo Go. Ltd. Wilson Diagnostics, Inc.
Anaiabs, Inc. J. T. Baker Chemical Co. Brinkmann instruments, inc. Camag, Inc. EM Laboratories, inc. Gelman Instrument Co. Lab Glass, Inc. MISCO Scientific Pierce Chemical Co. Quantum Industries Supelco, Inc. Arthur H. Thomas Co. Toyo Kagaku Sangyo Co. Ltd.
chromatographs, paper, continuous flow curtain type
H. Reeve Angel & Co.. inc. Rohm and Haas Co. Toyo Kagaku Sangyo Co. Ltd. Utopia Instrument Co,
Brinkmann Instruments, Inc. MISCO Scientific H. Reeve Angel & Co., Inc. Schleicher & Schuell, inc. Schoeffel Instrument Corp, Toyo Kagaku Sangyo Co, Ltd.
scanners, photoelectric
densitometers Atago Optical Works Co., Ltd. Biomed Instruments, inc. Brinkmann instruments, Inc. Clifford instruments, inc. Controlled Atmosphere, inc. E-C Apparatus Corp. Farrand Optical Co., Inc. Geiman instrument Co. Helena Laboratories International Light, Inc. Joyce, Loebi & Co. Lab Glass, Inc.
ion-exchange paper
American I nstrument Co. Biomed Instruments, Inc, Clifford Instruments, Inc. Controlled Atmosphere, Inc. Gelman Instrument Co. Joyce, Loebl & Co. Photovolt Corp. Schoeffel Instrument Corp. Toyo Kagaku Sangyo Co. Ltd. TransidyneGeneral Corp. Car! Zeiss, inc.
scanners, ultraviolet fluorescence American Instrument Co. Baird-Atomic, Inc. Biomed Instruments, Inc,
LABORATORY
GUIDE
CHROMATOGRAPHY, PAPER CHROMATOGRAPHY, THIN LAYER Black Light Eastern Camag, Inc. Clifford Instruments, Inc. Farrand Optical Co.. Inc. Joyce, Loebl & Co. Photovolt Corp. Schoeffel Instrument Corp. Terra-Marine Bioresearch Toyo Kagaku Sangyo Co. Ltd. Transidyne General Corp. G. K. Turner Associates Ultra-Violet Products, Inc. Carl Zeiss, Inc.
timers, automatic Lab Glass, Inc. Non-Linear Systems, Inc. Scientific Industries, Inc. Scientific Products Toyo Kagaku Sangyo Co. Ltd.
viewing cabinets Analtech, Inc. Brinkmann Instruments. Inc. Gagne Associates, Inc. GCA/Precision Scientific Toyo Kagaku Sangyo Co. Ltd. Ultra-Violet Products, Inc.
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CHROMATOGRAPHY, process control Antek Instruments, Inc. Applied Automation, Inc. Beckman Instruments, Inc. The Bendix Corp., Process Instruments Div. Bristol Div. of Acco Controlled Atmosphere. Inc. Carlo Erba S.p.A. Phase Separations Ltd. Process Analyzers. Inc. (Tex.) Pye Unicam Ltd. Quantum Industries Shimadzu Seisakusho, Ltd.
Camag, Inc. Chemical Data Systems, Inc. Corning Glass Works EM Laboratories, Inc. Fisher Scientific Co. Floridin Co. Gelman Instrument Co. W. R. Grace & Co. Grand Island Biological Co. ICN Life Sciences Group Kensington Scientific Corp. Mallinckrodt Chemical Works, Science Products Div. MC/B Manufacturing Chemists MG Scientific Gases Phase Separations Ltd. Prolabo Quantum Industries Scientific Manufacturing Industries The Separations Group Supelco. Inc. Tivian Laboratories. Inc. Toyo Kagaku Sangyo Co. Ltd. Waters Associates Inc. Wilson Diagnostics, Inc.
Analabs. Inc. Baird-Atomic, I nc. Forro Scientific Co. Hruden Laboratory Products Nuclear Equipment Chemical Corp. Packard Instrument Co., Inc. Shimadzu Seisakusho, Ltd. Toyo Kagaku Sangyo Co. Ltd. Vangard Systems, Inc. Varian Instrument Div.
CHROMATOGRAPHY, THIN LAYER adsorbents, cellulose Analabs, Inc. Analtech, Inc. Applied Science Labs., Inc. J. T. Baker Chemical Co. Bio-Rad Laboratories Brinkmann Instruments, Inc. Camag. Inc. Chemical Data Systems, Inc. EM Laboratories, Inc. Fisher Scientific Co. Grand Island Biological Co. ICN Isotope & Nuclear Div. ICN Life Sciences Group Kensington Scientific Corp. MC/'B Manufacturing Chemists MG Scientific Gases Phase Separations Ltd. Quantum Industries H. Reeve Angel & Co.. Inc. Schleicher & Schuell, Inc. Scientific Manufacturing Industries Sigma Chemical Co. Supelco, Inc. Toyo Kagaku Sangyo Co. Ltd. Wilson Diagnostics, Inc.
adsorbents, silica Analabs, Inc. Analtech. Inc. Applied Science Labs., Inc. J. T. Baker Chemical Co. Bio-Rad Laboratories Brinkmann Instruments, Inc.
94 LG AUGUST 1974
chromatographs, thin layer, preparative Analtech, Inc. Applied Science Labs., Inc. Boehringer Mannheim Corp. Brinkmann Instruments, Inc. Camag. Inc. Gelman Instrument Co. Kensington Scientific Corp. Lachat Chemicals, Inc. PfaltzS Bauer, Inc. Quantum Industries H. Reeve Angel & Co., Inc. Regis Chemical Co. Schleicher & Schuell, Inc. Scientific Manufacturing Industries Shandon Southern Instruments. Inc. Supelco, Inc. Toyo Kagaku Sangyo Co. Ltd.
cellulose powders Analtech, Inc. Applied Science Labs.. Inc. J. T. Baker Chemical Co. Bio-Rad Laboratories Brinkmann Instruments, Inc. Camag. Inc. EM Laboratories, Inc. Fisher Scientific Co. Grand Island Biological Co. ICN Isotope & Nuclear Div. !CN Life Sciences Group Kensington Scientific Corp. MC/B Manufacturing Chemists Quantum Industries H. Reeve Angel & Co., Inc. Schleicher & Schuell, Inc. Scientific Manufacturing Industries Sigma Chemical Co. Supelco. Inc. Toyo Kagaku Sangyo Co. Ltd. Wilson Diagnostics, Inc.
chromatographs, thin layer CHROMATOGRAPHY, radio — see also radiation equipment
Schoeffel Instrument Corp. Shandon Southern Instruments, Inc. Toyo Kagaku Sangyo Co. Ltd.
Analabs, Inc. Analtech, Inc. Applied Science Labs., Inc. Boehringer Mannheim Corp, Brinkmann Instruments, Inc. Camag, Inc. Carlo Erba S.p.A. Gelman Instrument Co. Helena Laboratories ICN Life Sciences Group Kensington Scientific Corp. Lachat Chemicals, Inc. Lightner Instrument Co. MG Scientific Gases MISCO Scientific Nuclear Equipment Chemical Corp. Pharmacia Fine Chemicals, Inc. Quantum Industries H. Reeve Angel & Co., Inc. Regis Chemical Co. Schleicher & Schuell, Inc. Schoeffel Instrument Corp.
See the GELMAN INSTRUMENT instant thin layer chromatography ad o n p a g e 193 Scientific Manufacturing Industries Shandon Southern Instruments, Inc. Supelco, inc. Arthur H. Thomas Co. Tivian Laboratories, Inc. Toyo Kagaku Sangyo Co. Ltd. Wilson Diagnostics, Inc. Carl Zeiss, Inc.
chromatographs, thin layer continuous flow Analtech, Inc. Brinkmann Instruments, Inc. Camag. Inc. Lachat Chemicals, Inc. Regis Chemical Co.
chromatography, thin layer, adsorbents Analabs, Inc. Analtech, Inc. Applied Science Labs., Inc. J. T. Baker Chemical Co. Bio-Rad Laboratories Brinkmann Instruments, Inc. Camag. Inc. Chemical Data Systems, Inc. Corning Glass Works EM Laboratories, Inc. Fisher Scientific Co. Floridin Co. Gelman Instrument Co. W. R. Grace & Co. ICN Isotope & Nuclear Div. ICN Life Sciences Group Kensington Scientific Corp. Mallinckrodt Chemical Works, Science Products Div. MG Scientific Gases Multiform Desiccant Products, Inc. Pharmacia Fine Chemicals, Inc. Quantum Industries H. Reeve Angel & Co., Inc. Schleicher & Schuell, Inc. Scientific Manufacturing Industries Supelco, Inc. Toyo Kagaku Sangyo Co. Ltd. Waters Associates Inc. Wilson Diagnostics, Inc.
chromatography, thin layer, applicators Analabs, Inc. Analtech, Inc. Applied Science Labs.. Inc. Boehringer Mannheim Corp. Brinkmann Instruments, Inc. Camag, Inc. Carlo Erba S.p.A. Fischer & Porter Co. Gelman Instrument Co. Helena Laboratories Kensington Scientific Corp. Kontes Kontes/Martin, Inc. MG Scientific Gases Quickfit Scientific Manufacturing Industries Shandon Southern Instruments, Inc. Supelco, Inc. Arthur H. Thomas Co. Toyo Kagaku Sangyo Co. Ltd. Unimetrics Corp. Utopia Instrument Co. Wilson Diagnostics, Inc.
chromatography, thin layer, densitometers American Instrument Co. Atago Optical Works Co., Ltd. Biomed Instruments, Inc. Camag, Inc. Clifford Instruments, Inc. E-C Apparatus Corp. Carlo Erba S.p.A. Farrand Optical Co., Inc. Gelman Instrument Co. Helena Laboratories Joyce, Loebl & Co. Kensington Scientific Corp. Kontes Lightner Instrument Co. Perkin-Elmer Corp. Photovolt Corp.
Quantum Industries Schoeffel Instrument Corp. Scientific Manufacturing Industries Toyo Kagaku Sangyo Co. Ltd. Transidyne General Corp. Carl Zeiss, Inc.
chromatography, thin layer, fluorescence American Instrument Co. Analabs, Inc. Analtech, Inc. Applied Science Labs., Inc. Baird-Atomic, Inc. Biomed Instruments, inc. Black Light Eastern Brinkmann Instruments, Inc. Camag, Inc. Clifford Instruments, Inc. EM Laboratories, Inc. Farrand Optical Co., Inc. Gelman Instrument Co. Joyce, Loebl & Co. Kensington Scientific Corp. Kontes Mallinckrodt Chemical Works. Science Products Div. MG Scientific Gases Perkin-Elmer Corp. Photovolt Corp. Quantum Industries Schoeffel Instrument Corp. Scientific Manufacturing Industries Supelco, Inc. Toyo Kagaku Sangyo Co. Ltd. G. K. Turner Associates Ultra-Violet Products, Inc. Carl Zeiss, Inc.
developing apparatus Analabs, Inc. Analtech. Inc. Applied Science Labs., Inc. Brinkmann Instruments, Inc. Camag, Inc. Eastman Kodak Co. Eastman Kodak Co., Eastman Organic Chemicals Fisher Scientific Co. Gelman Instrument Co. Kensington Scientific Corp. Kontes Kontes/Martin, Inc. Quickfit Schoeffel Instrument Corp. Scientific Manufacturing industries Shandon Southern Instruments. Inc. Supelco, Inc. Arthur H. Thomas Co. Toyo Kagaku Sangyo Co. Ltd.
ion exchange resins AMFCuno Div. Analtech, Inc. Applied Automation, Inc. Applied Science Labs., Inc. J. T. Baker Chemical Co. Beckman Instruments, Inc. Bio-Rad Laboratories Brinkmann Instruments, Inc. Grand Island Biological Co. Hruden Laboratory Products ICN Isotope & Nuclear Div. ICN Life Sciences Group Ion Exchange Products, Inc. Mallinckrodt Chemical Works, Science Products Div. MC/B Manufacturing Chemists Pharmacia Fine Chemicals, Inc. Rohm and Haas Co. The Separations Group SERFILCO Sigma Chemical Co. Toyo Kagaku Sangyo Co. Ltd. Utopia Instrument Co. Waters Associates Inc.
plate scanners, radioisotope Nuclear Equipment Chemical Corp. Toyo Kagaku Sangyo Co. Ltd. Vangard Systems, Inc. Varian Instrument Div.
plates, glass Analabs, Inc. Analtech, Inc. Applied Science Labs., Inc. The Bellacour Co. Boehringer Mannheim Corp. Brinkmann Instruments, Inc.
LABORATORY
GUIDE
CHROMATOGRAPHY, THIN LAYER COATING EQUIPMENT Camag, Inc. CCM: Schaar Scientific, Inc. Chemical Data Systems, Inc. Corning Glass Works Custom Glassblowing Service Dell Optics Co.. Inc. Erie Scientific Co. Fisher Scientific Co. Fish-Schurman Corp. Hi-Temp Glass Products. Inc. ICN Life Sciences Group Kaufman Glass Co. Kensington Scientific Corp. Kontes Kontes/Martin, Inc. Mallinckrodt Chemical Works. Science Products Div. Pharmacia Fine Chemicals, Inc. Ouickfit Schleicher & Schuell. Inc. Scientific Manufacturing Industries Shandon Southern Instruments, Inc. Supelco, Inc. Arthur H. Thomas Co. Toyo Kagaku Sangyo Co. Ltd. U. S. Fused Quartz Co., Inc. Wilson Diagnostics. Inc
plates, glass, prepared Analabs, Inc. Analtech, Inc. Applied Science Labs.. Inc. Brinkmann Instruments, Inc. Camag. Inc. CCM; Schaar Scientific. Inc. Chemical Data Systems, Inc. EM Laboratories, Inc. Fisher Scientific Co. Grand Island Biological Co. Helena Laboratories Hi-Temp Glass Products, Inc. ICN Life Sciences Group Kaufman Glass Co. Kensington Scientific Corp. Kontes Mallinckrodt Chemical Works, Science Products Div. Quantum Industries Schleicher & Schuell. Inc. Schwarz/Mann Scientific Manufacturing Industries Supelco, inc. Arthur H. Thomas Co. Toyo Kagaku Sangyo Co. Ltd.
scrapers, zonal Analabs. Inc. Brinkmann Instruments, Inc. Camag, Inc. Electrothermal Engineering, Ltd. Isolab, Inc. Kontes Toyo Kagaku Sangyo Co. Ltd.
sheets, flexible prepared Analtech, Inc. Applied Science Labs.. Inc. J. T. Baker Chemical Co. Brinkmann Instruments, inc. Camag, Inc. CCM: Schaar Scientific, Inc. Eastman Kodak Co. Eastman Kodak Co.. Eastman Organic Chemicals EM Laboratories, Inc. Fisher Scientific Co. Gelman Instrument Co. Helena Laboratories Kaufman Glass Co. Mallinckrodt Chemical Works, Science Products Div H. Reeve Angel & Co., Inc, Toyo Kagaku Sangyo Co. Ltd.
spray boxes Analabs, Inc. Brinkmann Instruments, Inc. Camag, Inc. Supelco. Inc. Toyo Kagaku Sangyo Co. Ltd.
streakers Analabs, Inc. Analtech, Inc. Applied Science Labs., Inc. Brinkmann Instruments, Inc. Camag, Inc. Chemical Data Systems, Inc. Drummond Scientific Co. E-C Apparatus Corp. Kensington Scientific Corp.
LABORATORY GUIDE
Kontes Kontes/Martin, Inc. Rodder Instrument Schoeffel Instrument Corp. Scientific Manufacturing Industries Shandon Southern Instruments, Inc. Supelco, Inc. Toyo Kagaku Sangyo Co. Ltd.
CLAMP AND ROD SYSTEMS (FOR GLASSWARE) Ace Glass, Inc. Central Scientific Co. Custom Glassblowing Service Fischer & Porter Co. Fisher Scientific Co. GCA/Precision Scientific Greiner Scientific Corp. Hruden Laboratory Products Kontes Kontes/Martin, Inc. Lab Glass, Inc. Lab-Line Instruments. Inc LaPine Scientific Co. Manostat Corp. Penn-Chem Corp. Prolabo Quartz General Corp. Sargent-Welch Scientific Co. Scientific Glass & Instruments, Inc. Arthur H. Thomas Co. Henry Troemner, Inc. Zena Co.
CLAMPS Ace Glass, Inc. Bel-Art Products Wm, Boekel & Co., Inc. Central Scientific Co. Custom Glassblowing Service Dynalab Corp. Enerpac Fisher Scientific Co. A. Gallenkamp and Co. Ltd. GCA/Precision Scientific Greiner Scientific Corp. Hruden Laboratory Products Ideal Corp. Kontes Kontes/Martin, Inc. Lab Glass, Inc. Lab-Line Instruments, Inc LaPine Scientific Co. Mercer Glass Works, Inc. Ohaus Scale Corp. Prolabo Quartz General Corp. Sargent-Welch Scientific Co. TA Mfg. Corp. Arthur H. Thomas Co Henry Troemner, Inc. Victaulic Company of America Zena Co.
CLASSIFIERS GEOS Corp. N. Hunt Moore & Associates, Inc. Majac Div.
CLEAN ROOMS AND FURNITURE Air Control. Inc. American Air Filter Co., Inc. Barnstead Co. S. Blickman, Inc. Controlled Atmosphere, Inc. Controlled Environment Equipment Corp. Curtin Scientific Co. ENVIRCO, Inc. Forest Scientific. Inc. Hotpack Corp. Hruden Laboratory Products Kewaunee Scientific Equipment Corp. Labconco Corp. Lab-Items Associates Liberty Industries, Inc Fred Portz Jr. Associates Production Systems. Inc. Scientific Systems Corp. Tenney Engineering. Inc. Henry Troemner, Inc. Ultrasonic Instruments International Ltd. United Technical Corp.
Atomic Products Corp. Curtin Scientific Co. Economics Laboratory. Inc. Fisher Scientific Co. Forest Scientific. Inc. Godax Laboratories Greiner Scientific Corp, Heat Systems-Ultrasonics, Inc. Heinicke Instruments Co. Hruden Laboratory Products International Products Corp. Ion Exchange Products, Inc. Isolab, Inc. L & R Manfacturing Co. Mallinckrodt Chemical Works, Science Products Div. Manostat Corp. Merix Chemical Co. Microbiological Associates, Inc. G. Frederick Smith Chemical Co. Sonicor Instrument Corp. Sunshine Chemical Corp. Technicraft International. Inc. Arthur H. Thomas Co. Tivian Laboratories, Inc. Ultrasonic Instruments International Ltd. Ultrasonics Corp. VWR Scientific Wale Apparatus Co.
CLEANING EQUIPMENT — see also ultrasonic cleaning equipment and mercury cleaning equipment Amsco Industrial Co. Barnstead Co, Bel-Art Products The Bendix Corp. Blackstone Ultrasonics, Inc. Branson Instruments, Inc. Economics Laboratory. Inc. Fisher Scientific Co. FMC Corp., Agricultural Machinery Div. Forest Scientific. Inc. Gagne Associates. Inc. GEOS Corp. Graymills Corp. Harrick Scientific Corp. Headway Research. Inc. Heat Systems-Ultrasonics, Inc. Industrial Washing Machine Corp. International Plasma Corp. M. W. Jenkins Sons, Inc, Kontes Kontes/Martin, Inc. Lab-Items Associates Lab-Line Instruments, Inc L & R Manfacturing Co. LFECorp. Metalwash Machinery Corp. Molectrics, Inc. Nuclear Equipment Chemical Corp. Nuclear Products Co. Phillips Manufacturing Co. Fred Portz Jr. Associates Sonicor Instrument Corp. The Sorg Paper Co. Southern Cross Manufacturing Corp. Sunshine Chemical Corp. Technics, Inc. Ultrasonic Instruments International Ltd. Ultrasonics Corp. Vemitron Medical Products, Inc. Wale Apparatus Co.
CLOTHING, laboratory Atomic Products Corp. Bel-Art Products Fisher Scientific Co. General Scientific Equipment Co.
CLOTHING, laboratory, disposable Atomic Products Corp. Dynalab Corp. General Scientific Equipment Co. Handgards. Inc. Nuclear Associates, Inc. Nuclear Equipment Chemical Corp. Research Associates, Inc. Scientific Products
CLEANING COMPOUNDS, labware
COAL AND COAL BY-PRODUCT TESTING APPARATUS AND ACCESSORIES
Alcolac. Inc. Alconox, Inc.
Fred S. Carver Inc. Carlo Erba S.p.A.
A. Gallenkamp and Co Ltd. GCA Technology Div. Greiner Scientific Corp. Mettler Instrument Corp. Parr Instrument Co. Rigaku/USA Scientific Glass & Instruments, Inc. Arthur H. Thomas Co. WeatherMeasure Corp.
COATING EQUIPMENT Aremco Products, Inc. Brinkmann Instruments. Inc. CHA Industries Custom Scientific Instruments, Inc. Delsen Corp. Denton Vacuum, Inc. Edwards High Vacuum, Inc. Galileo Corp. of America General Technologies Corp. Hardman, Inc. Headway Research, Inc. Heil Process Equipment Corp. High Vacuum Equipment Corp. Humphreys Corp, Kaltec Scientific Instrument. Inc. Materials Research Corp. Middlesex General Ind Perkin-Elmer Ultek, Inc. Precision Quincy Corp. Talboys Engineering Corp Technics, Inc. Tegal Corp. Thermionics Laboratory, Inc. Varian Vacuum Div.
Β
COATINGS
c
general
Ε
Acheson Colloids Co. Analog Devices, Inc. Applied Coatings, Inc. Applied Plastics Co.. Inc. Aremco Products, Inc. Atlantic Research Corp. Beckman Instruments. Inc. Carboline Co. Chempiast, Inc. Coherent Radiation Cooke Vacuum Products, Inc. Coors Porcelain Co. CVC Products, Inc. Dell Optics Co., Inc. E. I, du Pont de Nemours & Co.. Inc. Esco Products Fish-Schurman Corp. Garlock. Inc. General Technologies Corp. Hardman, Inc. Heil Process Equipment Corp. Humphreys Corp. Janos Optical Corp. Kalvar Corp. Materials Research Corp. Nalge Co. Ν L Industries, Inc.. Dutch Boy Paints Div. Plasti-Kote Co. Polykote, Inc. Polysciences. Inc. Ram Chemicals W. S. Shamban & Co. Stellite Div. Sunshine Chemical Corp. Syncor Products Co., Inc. Technics, Inc. Thermionics Laboratory, Inc. Union Carbide Corp., Chemicals & Plastics Union Carbide Corp., Materials Systems Div. Uniroyal, Inc. Varian Vacuum Div.
Acheson Colloids Co. Analog Devices, Inc. Aremco Products. Inc. Atomergic Chemetals Co. The Carborundum Co.. Refractories & Electronics Div. Cerac. Inc. Coors Porcelain Co. CVC Products, Inc. Dylon Industries. Inc. General Technologies Corp. Honeywell, Inc., Aerospace & Defense Group Humphreys Corp. Kaman Sciences Corp. Materials Research Corp. Norton Co. (Mass) Nuclear Materials & Equipment Corp. Technics, Inc. Thermionics Laboratory, Inc.
AUGUST 1974 99 LG
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COATING EQUIPMENT COMBUSTION EQUIPMENT AND ACCESSORIES Union Carbide Corp., Materials Systems Div. Varian Vacuum Div.
COLORI METERS — see also petroleum testing equipment
electrically conductive Analog Devices, inc. Applied Coatings, inc. Aremco Products, Inc. CarboJineCo. CVC Products, Inc. Denton Vacuum, Inc. Dylon industries, Inc, Hardman, Inc. Optics Technology, Inc. Polysciences, tnc. Tegal Corp. Varian Vacuum Div, Vari-Light Corp.
optical
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Alcatel Vacuum Products American Optica! Corp, (Mass.) Balzers High Vacuum Corp. Broomer Research Corp. Coherent Radiation Cooke Vacuum Products, Inc, Corion Instrument Corp. CVC Products, Inc. Davidson Optronics, Inc. Dell Optics Co., Inc, Denton Vacuum, Inc. Eastman Kodak Co. EM Laboratories, inc. Ercona Corp. Esco Products Heliotek Optical Thin Film Div. Honeywell, inc., Aerospaces Defense Group Janos Optical Corp. Key Associates Laser Energy, Inc. Laser Optics, Inc. Optical Coating Laboratory, Inc. Optical Industries, Inc, Optics Technology. Inc. Polacoat, Inc. Polysciences, Inc. Pomfret Research Optics inc. Spectra-Physics, inc. legal Corp. Varian Vacuum Div, Vari-Light Corp.
COLD PLATES Brinkmann Instruments, Inc. Cole-Parmer Instrument Co. Dean Products, Inc, Carlo Erba S.p.A. FTS Systems, Inc. Hi-Temp Giass Products, Inc, Lab Glass, Inc. Lab-Line Instruments, inc Lawler Mfg., Inc. Paul Mueller Co. Sargent-Welch Scientific Co. Shimadzu Seisakusho, Ltd. Technics, Inc. Thermo-Electric Co, Thermoelectrics Unlimited, Inc.
COLLIMATORS, automatic electrical Controlled Atmosphere, Inc. Davidson Optronics, inc. The Machiett Laboratories, inc. Materials Research Corp. Rank Precision Industries, Inc. " Shimadzu Seisakusho, Ltd.
COLLIMATORS, optical Coherent Radiation Controlled Atmosphere, Inc. Davidson Optronics, Inc. The Ealing Corp. Edmund Scientific Co. Gaertner Scientific Corp. Kari Heitz, inc. Key Associates Koiimorgen Corp, Kari Lambrecht Corp. Lenox Instrument Co. Nikon, Inc. Optical Industries, Inc. Perkin-Elmer Corp. Rank Precision Industries, Inc. Rudolph Instruments Schoeffel Instrument Corp. Shimadzu Seisakusho. Ltd. Spectra-Physics, Inc. Spectroiab
102 LG AUGUST 1974
carbon analyzers American Instrument Co. Angstrom, Inc. Beckman Instruments, Inc.
Bico, Inc.
See the BRINKMANN INSTRUMENT probe colorimeters ad on page 1 Advanced Instruments. Inc. Atago Optical Works Co.. Ltd. Bausch & Lomb, Inc., Analytical Systems Div, Beckman instruments, inc. Central Scientific Co. Chemtrix, inc. Coleman instruments Controlled Atmosphere, Inc. Delta Scientific Corp. Diano Corp. Dow Diagnostics E. I, du Pont de Nemours & Co., Inc. Enraf-Nonius, Inc. Carlo Erba S.p.A. Fisher Scientific Co. A. Gallenkamp and Co. Ltd. Gamma Scientific, inc. Gardner Laboratory, inc. GCA/Precrsion Scientific Gienco Scientific, tnc. Hach Chemical Co. Hunter Associates Laboratory, Inc. Klett Manufacturing Co., Inc. LaMotte Chemical Prodjcts Co, Lovibond of America, Inc. Macbeth Color & Photometry. Manufacturers Engineering & Equipment Corp, Markson Science, Inc. McKee-Pedersen Instruments Monitor Technology, Inc. Particle Data, inc. Perktn-Elmer Corp. PhotobeiiCo., Inc, Photovoit Corp. PyeUnicamLtd. Sanda, inc. Sargent-Welch Scientific Co. Shimadzu Seisakusho, Ltd. TCS Teledyne Avionics WeatherMeasure Corp. ZenaCo,
COMBUSTION EQUIPMENT AND ACCESSORIES absorption bulbs AceGlass, Inc. Bico, Inc. Custom Glassblowing Service Fisher Scientific Co. A. Gallenkamp and Co. Ltd. Lab Glass, Inc. Prolabo Quartz General Corp. Scientific Glass £ Instruments, Inc. SGA Scientific Inc. Arthur H. Thomas Co.
boats Amersil, Inc. Bico, Inc, Wm. 8oekel&Co., Inc. Coors Porcelain Co. Harry W. Dietert Co. DOKRMANN Div. Envirotech Corp. Engelhard Minerals & Chemicals Corp., Engelhard Industries Div. Fisher Scientific Co. GCA/Precision Scientific B, J. Harvey instrumeni Corp. Leco Corp. Matthey Bishop, Inc. Met-Bay, inc. National Ceramic Products Co. Norton Co. (Mass) Quartz General Corp. Sanda, Inc. Thermal American Fused Quartz Co. Arthur H, Thomas Co. Ultra Carbon Corp. U. S. Fused Quartz Co., Inc. Zircoa
Calibrated instruments, inc. Cicero Scientific Glass Coleman instruments DEVCO Engineering, Inc. Harry W. Dietert Co. DOHRMANN Div, Envirotech Corp. The Hays Corp. ionics, Inc. Leco Corp. Li nd berg Mine Safety Appliances Co, Perkin-Elmer Corp. Rank Precision Industries, Inc. Sanda.Inc. Shimadzu Seisakusho, Ltd. Arthur H. Thomas Co. Utopia Instrumeni Co.
furnaces — see also furnaces Abar Corp. Angstrom, Inc. Astro Industries, Inc. Bico, Inc. Blue M Electric Co. BTU Engineering Corp.
Burrell Corp.
Custom Scientific Instruments, inc. Harry W. Dietert Co. Electra Products Co. A. Gallenkamp and Co. Lid. The Grieve Corp. Harper Electric Furnace Corp. R.J. Harvey Instrument Corp. Hotpack Corp. Κ. Η. Huppert Co., Inc. Industrial Systems Corp. Ipsen Industries Leco Corp. LeMontScientific, Inc. Lepet High Frequency Labs.. Inc. Lindberg Pereny Equipment Co., inc. Phase Separations Lid, ProcedyneCorp. Prolabo Sargent-Welch Scientific Co. Seias Corp. of America Shimadzu Seisakusho, Ltd. Sunbeam Equipment Corp. Surface Combustion Div, Tegal Corp. Thermolyne Corp. Theta Industries, Inc, Arthur H. Thomas Co. Trane Thermal Co. Zena Co.
gas analyzers Analytical Instrument Development, inc. Angstrom, inc. Antek Instruments, Inc. Applied Automation, Inc. Applied Electrochemistry, Inc. Bacharach Instrument Co. Bailey Meter Co. Barnes Engineering Co. Beckman Instruments, Inc. The Bendix Corp.. Process Instruments Div. Bowers instrument Co. Burrell Corp. Calibrated instruments, Inc. Carle instruments, Inc. CEA instruments Chemical Data Systems, Inc. Chemtronics, Inc. CVC Products, Inc. DEVCO Engineering, Inc. E. I. du Pont de Nemours & Co., Inc. Dwyer Instruments, Inc. Dynasciences Corp. Carlo Erba S.p.A. Extranuclear Labs., inc, Fisher Scientific Co. A. Gaiienkamp and Co. Ltd. General Monitors, Inc. Gow-Mac Instrument Co. The Hays Corp. Honeyweii, inc.. Process Control Div. Houston-Atlas, Inc. International Biophysics Corp. Intertech Corp. ITT Barton Kent Cambridge instrument Co, Leco Corp. Leeds & NorthrupCo. Manufacturers Engineering & Equipment Corp. McMillan Electronics Corp, Mine Safety Appliances Co.
National Environmental Instruments inc. Nuclide Corp. Nuclide Corp,, AGV Div. Olson Laboratories, Inc. Perkin-Elmer Corp. The PermutitCo. Phase Separations Ltd. Process Analyzers, Inc. (Tex.) Prolabo Scientific Industries, Inc. Scott Aviation Shimadzu Seisakusho, Ltd. Spectral Imaging, inc. Teledyne Analytical instruments Thermo-Lab Instruments, Inc. Arthur H. Thomas Co. Victory Engineering Corp. Wilks Scientific Corp.
hydrocarbon analyzers Analytical instrument Development, inc. Andros. inc. Aniek Instruments, Inc. Bacharach Instrument Co. Barnes .Engineering Co. Baroid Div. Beckman Instruments, Inc, The Bendix Corp., Process Instruments Div, Carle Instruments, Inc. Chemical Data Systems, Inc. Condyne Instruments CVC Products, Inc. DEVCO Engineering, Inc. Carlo ErbaS.p.A. General Monitors, inc. Gow-Mac Instrument Co. InterOcean Systems, Inc. Intertech Corp, ionics, Inc. Leco Corp. Mine Safety Appliances Co. M/K Systems, Inc. Olson Laboratories, Inc. Perkin-Elmer Corp. Philips Electronic Instruments, Inc. Power Designs Pacific, Inc. Sanda. Inc. Scott Aviation Scott Research Laboratories, Inc. Shimadzu Seisakusho, Ltd. Teledyne Analytical instruments Utopia Instrument Co. Varian Instrument Div. Wilks Scientific Corp.
hydrogen analyzers American Instrument Co. Applied Automation. Inc. Bacharach Instrument Co. Beckman Instruments, Inc. The Bendix Corp., Process Instruments Div. Coleman Instruments Condyne Instruments DEVCO Engineering, Inc. Dynasciences Corp, Carlo ErbaS.p.A. A. Gallenkamp and Co. Ltd. General Monitors, Inc. The Hays Corp. Intertech Corp. Ionics, Inc. Kent Cambridge Instrument Co. Leco Corp. Manufacturers Engineering & Equipment Corp. MMton Roy Co. Mine Safety Appliances Co. Perkin-Elmer Corp. Sanda,Inc. Scoit Aviation Shimadzu Seisakusho, Ltd.
liquid scintillation sample preparation R.J. Harvey Instrument Corp. Isolab. Inc. Nuclear Associates, Inc. Nuclear Equipment Chemical Corp. Owens-I Minois, Inc. Packard Instrument Co., Inc. Teledyne Isotopes (N.J.)
Ace Glass, Inc, American Instrument Co. Amersil, Inc. Brinkmann Instruments, Inc. Cahn instruments Corning Glass Works Carlo ErbaS.p.A. Fisher Scientific Co.
LABORATORY GUIDE
COMBUSTION EQUIPMENT AND ACCESSORIES COMPUTERS AND ACCESSORIES Perkin-Elmer Corp. Sanda, Inc. Sargent-Welch Scientific Co, Arthur H. Thomas Co.
oxidizer analyzers Beckman Instruments, Inc. Dynasciences Corp. R. J. Harvey instrument Corp. ionics, inc. Mine Safety Appliances Co, Sanda, Inc.
oxygen fiask R. J. Harvey Instrument Corp. Arthur H. Thomas Co.
refractories
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Sabcock & Wilcock Co., Refractories Div. Coors Porcelain Co. Corning Glass Works Leco Corp. Norton Co, (Mass) Saxonburg Ceramics, Inc. Chas. Tayior Sons Co. Thermal American Fused Quartz Co. ThermolyneCorp. Zircoa
sulfur analyzers Analytical instrument Development, Inc. Antek instruments. Inc. Applied Automation, Inc. Beckman Instruments, Inc. The Bendix Corp., Process Instruments Div. Bico, Inc. Calibrated Instruments, inc. CEA Instruments Harry W. Dietert Co. DOHRMANN Div. Envirotech Corp. E. I. du Pont de Nemours &Co.. Inc. Dynasciences Corp. Enraf-Nonius, Inc. GCA/Preciston Scientific The Hays Corp. Houston-Atlas, inc. intertech Corp. ITT Barton Land Instruments, Inc. Leco Corp, Leeds & Northrup Co. Lindberg Mine Safety Appliances Co, Philips Electronic Instruments, Inc, Podbielniak, Inc. Process Analyzers, Inc. (Tex.) Prolabo Rank Precision Industries, Inc. Scientific Glass & Instruments, Inc. Scientific Industries, Inc. Shimadzu Seisakusho. Ltd. Arthur H. Thomas Co, Tracer, inc. Utopia Instrument Co.
tubes Ace Glass, inc. Amerstl, Inc. The Bellacour Co. Bico, Inc. Cicero Scientific Glass Coors Porcelain Co. Corning Glass Works Custom Glassblowing Service Harry W. Dietert Co. Fischer & Porter Co. Fisher Scientific Co. General Electric Co., Lamp Glass Dept. R.J. Harvey Instrument Corp. Kontes Lab Glass, Inc. Leco Corp. Lindberg Norton Co. (Mass) Nuclear Materials & Equipment Corp. Quartz Sientific, Inc. Sanda, Inc. Saxonburg Ceramics, inc. Scientific Giass & Instruments, inc. SGA Scientific inc. Thermal American Fused Quartz Co. Arthur H. Thomas Co. United Electric Controls Co. U. S. Fused Quartz Co., Inc. Worden Quartz Products Zircoa
106 LG AUGUST 1974
other Andros, inc. Automatic Switch Co. Wm. Boekef&Co., Inc. Custom Scientific Instruments, Inc. Land Instruments, Inc. Packard Instrument Co., inc. Paten tro! Corp.
COMMUTATORS Esco Products Theta Instrument Corp.
COMPARATORS, optical Delta Scientific Corp. The Ealing Corp. Edmund Scientific Co. Ercona Corp. FtnescaieCo. Gaertner Scientific Corp. Gardner Laboratory, inc. GCA/DavidW. Mann Co. Hellige, Inc. Jarrell-Ash Div, Lenox instrument Co. Lovibond of America, Inc. National Instrument Co., Inc.
Nikon, Inc.
Optical Industries, Inc. Projectina USA Rank Precision Industries, inc, Shimadzu Seisakusho, Ltd. Space-Optics Corp, Testing Machines: Inc.
COMPARATORS, plate Gaertner Scientific Corp. Jarrell-Ash Div. RanK Precision Industries Ltd., Analytical Div. RanK Precision Industries, Inc.
COMPUTER ANALYTICAL SYSTEMS ABBOTT, Scientific Products Div. Adams-Smith, inc. Applied Automation, inc. Artronix, %inc, CVC Products, Inc. Gilford Instrument Labs., inc. Hewlett-Packard, Avondaie Div. Intertech Corp, Non-Linear Systems, Inc. Systems industries, inc. Varian Instrument Div.
COMPUTERS AND ACCESSORIES
Computer Inquiry Systems, Inc. DATAcap, inc. Electronic Associates, inc. Hewlett-Packard Co. Macbeth Color & Photometry Div. Oiivetti Corp. of America Research, Inc. Tektronix, Inc. Texas instruments, inc., Digital Systems Div. Theta instrument Corp. Uniroyai, inc. Wang Laboratories, Inc, Wyle Labs.
digital Adams-Smith, inc. Applied Automation, Inc. Artronix, Inc. Associated Electrical Industries international Ltd. Bailey Meter Co. B-D Spear Medicai Systems Beckman Instruments, inc. Berkeley Scientific Labs,, inc. Biomed Instruments, Inc. Bristol Div. of Acco Cambridge Thermionic Corp. Canberra Industries, Inc. Dante! Industries, inc. DATAcap, inc. Digi-Data Corp. Digiiab, inc. Digital Equipment Corp, Eldorado Electrodata Corp, Electronic Associates, Inc, Elscint Inc. Esteriine Angus Fischer & Porter Co. The Foxboro Co. Hewlett-Packard Co., (Calif.) Honeywell, Inc., Process Control Div, IBM Corp. Japan Spectroscopic Co., Ltd. JEOL Analytical Instruments, Inc. Leeds & Northrup Co. Macbeth Color & Photometry Div. Monroe, The Calculator Co. Nicolet Instrument Corp. Nuclear Data, Inc. Nuclide Corp. Olivetti Corp. of America Perkin-Elmer Corp. Process Analyzers, inc, (Tex.) Research, inc. Shimadzu Seisakusho, Ltd. SSR instruments Co. Systems Industries, Inc. T&TTechnology Texas Instruments, Inc., Digital Systems Div. Theta instrument Corp, Transform Technology inc. Varian Data Machines Varian Data Machines Vidar Autodata, Inc. Westinghouse Electric Corp., Computer & Instrumentation Div.
analog
electronic desk-top
Analog Devices, inc. Applied Automation, Inc. Bailey Meter Co. B-D Spear Medical Systems BeiS & Howefl Biotronex Lab., inc. Bristol Div. of Acco Cambridge Thermionic Corp. Daniel Industries, Inc. E. I. du Pont de Nemours & Co., Inc, Electronic Associates, Inc. Fischer & Porter Co, The Foxboro Co. Honeywell, inc., Process Control Div. Leeds & Northrup Co. The London Co. Macbeth Color & Photometry Div. Nuclide Corp. Process Analyzers, inc. (Tex.) Scientific Resources, inc. Sysiron-Donner Corp. Teiedyne Phiibrick Tetrahedron Associates, Inc. Vidar Autodata, Inc.
Artronix, Inc. DATAcap, Inc. Hewlett-Packard Co,, ICalif.) MITS, Inc. Monroe, The Caicuiator Co. Olivetti Corp. of America Packard Instrument Co., inc. Τ & Τ Technology Utopia Instrument Co. Wang Laboratories, Inc.
hybrla Baifey Meter Co. B-D Spear Medicai Systems Cambridge Thermionic Corp. Electronic Associates, Inc, Nuclide Corp. Perkifi-Eimer Corp. Spectro Products, Inc. Systron-Donner Corp. Theta instrument Corp. Varian Data Machines Westinghojse Electric Corp., Computer & Instrumentation Div.
computer terminals Adams-Smith, Inc, AMP Special industries Artronix. Inc. B-D Spear Medical Systems Berkeley Scientific Labs., Inc Broomall Industries, Inc. Computer Devices, inc.
magnetic memories Alpha Data, Inc. Artronix, inc. B-D Spear Medical Systems Gould, I n c , Instrument Systems Div Librascope Div. Process Analyzers, inc. (Tex.) Systems industries, inc.
scientific Artronix. inc. B-D Spear Medical Systems Beckman instruments, Inc. Berkeley Scientific Labs., Inc. Canberra Industries, Inc. DATAcap, inc. Digital Equipment Corp. Electronic Associates, inc. Eiscini inc. Gelman instrument Co. Hewlett-Packard Co., (Calif.) High Voltage Engineering Corp. IBM Corp, Image Analysing Computers, inc. JEOL Analytical instruments, inc. Macbeth Color & Photometry Div. Milletron, inc. Nicolet Instrument Corp. Nuclear Data. Inc. Perkin-Elmer Corp. Process Analyzers. Inc. (Tex.) Scientific Resources, Inc. Shimadzu Seisakusho, Ltd, Syntex Analytical Instruments, Inc. Systems Industries, inc. Technical Instruments Texas Instruments, Inc., Digital Systems Div. Arthur H. Thomas Co. Transform Technology inc. Varian Data Machines
data converters, analog to digital Adams-Smith, inc. American instrument Co. Anadex Instruments, Inc. Analog, Devices, Inc. Artronix, Inc. Astrosystems, Inc. Β & F Instruments, Inc. B-D Spear Medical Systems Beckman Instruments, inc. Berkeley Scientific Labs., Inc. SIOMATiON Broomall Industries, Inc. Burr Brown Research Corp. Cambridge Thermionic Corp. Canberra Industries, Inc. Chemical Data Systems, Inc. Gonrac Corp., New Jersey Div. Control Equipment Corp, Dana Labs, Inc. DATAcap, Inc. Data Graphics Corp. Denco Research Digital Equipment Corp. Disc instruments, inc. Doric Scientific Corp. Durrum Instrument Corp. E-H Research Laboratories, Inc. Electronic Associates, Inc. Esteriine Angus Fischer & Porter Co. Fluidyne Instrumentation The Foxboro Co. Gelman Instrument Co. General Devices, inc. Heath /Schlumberger Instruments Hewlett-Packard Co., (Calif.) Hewlett-Packard, Avondaie Div, Intronics, Inc. Itek Corp, Japan Spectroscopic Co., Ltd, Kaye instruments, inc. Kinemetrics, Inc, Leeds & Northrup Co. Leupold & Stevens, Inc. Librascope Div. Martin-Decker Co. Milletron, Inc. Monitor Labs., Inc. Newport Labs., Inc. Non-Linear Systems, Inc. Nuclear Data, Inc. Nuclide Corp. ORTEC Incorporated Perkin-Elmer Corp. Picker Corp. Precision Digital Princeton Applied Research Corp. Process Analyzers, Inc. (Tex.) Science Spectrum, inc. Shimadzu Seisakusho, Ltd. Systems Industries, Inc, Systems instruments Research, Inc, Τ & Τ Technology Technical instruments Tektronix, Inc. Teiedyne Phiibrick Tennelec, inc. Theta Instrument Corp, Arthur H. Thomas Co. Toledo Scale Tracor Northern, inc. Varian Data Machines Varian Instrument Div.
LABORATORY GUIDE
COMPUTERS AND ACCESSORIES CONTAINERS, sample Vidar Autodata, Inc. Wyle Labs.
data converters, digital to analog
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Anadex Instruments, Inc. Analog Devices, Inc. Artronix, Inc. Astrosystems, Inc. B-D Spear Medical Systems Beckman Instruments, Inc. Berkeley Scientific Labs., Inc. Burr Brown Research Corp. Cambridge Thermionic Corp. Control Equipment Corp. Data Graphics Corp. Denco Research Digital Equipment Corp. E-H Research Laboratories, Inc. Electronic Associates, Inc. Fluidyne Instrumentation The FoxboroCo. General Devices, Inc. Heath/Schlumberger Instruments Hewlett-Packard Co., (Calif.) Intronics, Inc. Itek Corp. Leeds & Northrup Co. Non-Linear Systems, Inc. Nuclide Corp. Optronics International, Inc. Process Analyzers, Inc. (Tex.) Shimadzu Seisakusho, Ltd. Systems Industries, Inc. Teledyne Philbrick Theta Instrument Corp. Toledo Scale Varian Data Machines Veeder-Root Wyle Labs.
data printers (special purpose for use with analytical instruments) Adams-Smith. Inc. ΑΕΙ Scientific Apparatus Inc. Alden Electronic & Impulse Recording Equipment Co.. Inc. American Instrument Co. Anadex Instruments, Inc. Bausch & Lomb, Inc., Analytical Systems Div. B-D Spear Medical Systems Beckman Instruments, Inc. Bristol Div. of Acco Chemical Data Systems, Inc. DATAcap, Inc. Data Graphics Corp. Denco Research Digital Equipment Corp. Electrodata Concepts, Inc. Finnigan Corp. Fluidyne Instrumentation Gelman Instrument Co. General Electric Co., Analytical Measurements General Rand Corp. Gilford Instrument Labs., Inc. Gould, Inc., Instrument Systems Div. Hathaway Industries Hewlett-Packard Co., (Calif.) Hewlett-Packard, Avondale Div. The Hickok Electrical Instrument Co. Honeywell, Inc., Process Control Div. Joyce. Loebl & Co. Kaye Instruments, Inc. Keltron Corp. The London Co. Macbeth Color & Photometry Martin-Decker Co. Monitor Labs., Inc. Non-Linear Systems, Inc. Orion Research Inc. ORTEC Incorporated Perkin-Elmer Corp. Presin Co., Inc. Process Analyzers, Inc. (Tex.) Royco Instruments, Inc. Schoeffel Instrument Corp. Systems Industries, Inc. Systems instruments Research, Inc. Τ & Τ Technology TC Systems, Inc. Technical Instruments Tetrahedron Associates, Inc. Texas Instruments, Inc., Digital Systems Div. Arthur H. Thomas Co. Vangard Systems, Inc. Varian Data Machines Veeder-Root Vidar Autodata, Inc. WeatherMeasure Corp.
110 LG AUGUST 1974
special purpose Adams-Smith, Inc. Avco Corp. B-D Spear Medical Systems Beckman Instruments, Inc. Berkeley Scientific Labs.. Inc. Bristol Div. of Acco Bruker-Magnetics, Inc. Cambridge Thermionic Corp. Canberra Industries, Inc. Control Equipment Corp. Daniel Industries, Inc. Data Graphics Corp. Denco Research Digital Equipment Corp. E. I. du Pont de Nemours & Co., Inc. Dynamic Data Corp. E-H Research Laboratories, Inc. Electronic Associates, Inc. Gelman Instrument Co. General Electric Co., Analytical Measurements General Rand Corp. Gilford Instrument Labs., Inc. Image Analysing Computers, Inc. Industrial Nucleonics Corp. Instron Corp. Itek Corp. Jarrell-Ash Div. Leeds & Northrup Co. The London Co. Martin-Decker Co. Nicolet Instrument Corp. Non-Linear Systems, Inc. Nuclide Corp. ORTEC Incorporated Pye Unicam Ltd. Spatial Data Systems, Inc. Spectro Products, Inc. Syntex Analytical Instruments, Inc. Systems Industries, Inc. Systems Instruments Research, Inc. Teledyne Philbrick Theta Instrument Corp. Varian Data Machines Varian Instrument Div. WeatherMeasure Corp.
tape B-D Spear Medical Systems Bell & Howell Digi-Data Corp. Digital Equipment Corp. Eldorado Electrodata Corp. Fluidyne Instrumentation General Rand Corp. Hewlett-Packard Co., (Calif.) Process Analyzers, Inc. (Tex.) Robins Industries Corp. The Superior Electric Co. Systems Industries, Inc. Tennecomp Systems Varian Data Machines WeatherMeasure Corp.
CONDENSERS AND ACCESSORIES Wm. Boekel &Co., Inc. Chemical Equipment Corp. Chem-Pro Equipment Corp. Corning Glass Works Eck & Krebs, Inc. Engelhard Minerals & Chemicals Corp., Engelhard Industries Div. Fisher Scientific Co. A. Gallenkamp and Co. Ltd. Heil Process Equipment Corp. Kontes Kontes/Martin, Inc. Lab Glass, Inc. Mercer Glass Works, Inc. Niagara Blower Co. Owens-Illinois, Inc. Pope Scientific, Inc. Precision Distillation Apparatus Co. Precision Forming & Stamping Co. Quartz General Corp. Thermovac Industries Corp. Arthur H. Thomas Co. Wheaton Scientific
CONDUCTIVITY BRIDGES Aquatronics, Inc. Balsbaugh Laboratories, Inc. Barnstead Co. Beckman Instruments, Inc. Bristol Div. of Acco Condyne Instruments Crystalab, Inc. Delia Scientific Corp. Dranetz Engineering Labs., Inc. Electro Scientific Industries, Inc. Carlo Erba S.p.A.
Fisher Scientific Co. General Radio Co. Ion Exchange Products, Inc. Kahl Scientific Instrument Corp. Kent Cambridge Instrument Co. Lab-Line Instruments, Inc Leeds & Northrup Co. LKB Instruments, Inc. Markson Science, Inc. McNab, Inc. Merix Chemical Co. Myron L Co. Pye Unicam Ltd. Rutherford Research Products Co. Arthur H. Thomas Co. Tracor, Inc. Tri-R Instruments, Inc. Yellow Springs Instrument Co., Inc.
CONDUCTIVITY EQUIPMENT Amsco Industrial Co. Aquatronics, Inc. Balsbaugh Laboratories, Inc. Barnstead Co. Beckman Instruments, Inc. Chemtrix, Inc. Chromatronix CRYENCO Crystalab, Inc. Delta Scientific Corp. DEVCO Engineering, Inc. Dranetz Engineering Labs., Inc. Dynatech R/D Co. Carlo Erba S.p.A. Fisher Scientific Co. General Radio Co. G LA Great Lakes Instruments, Inc. Hach Chemical Co. Honeywell, Inc., Process Control Div. Ion Exchange Products, Inc. Kahl Scientific Instrument Corp. Kent Cambridge Instrument Co. Lab-Line Instruments, Inc LaMotte Chemical Products Co. Leeds & Northrup Co. LKB Instruments, Inc. The London Co. Magna Corp. Markson Science, Inc. McNab, Inc. Merix Chemical Co. Milton Roy Co. Myron L Co. Nuclear Research Corp. Philips Electronic Instruments, Inc. Plessey Environmental Systems Pye Unicam Ltd. Rutherford Research Products Co. Telmar, Inc. Tennelec, Inc. Arthur H. Thomas Co. Triplett Corp. Tri-R Instruments, Inc. Universal Interfoc, Inc. Utopia Instrument Co. WeatherMeasure Corp. Wescan Instruments, Inc. Yellow Springs Instrument Co., Inc.
CONNECTORS, tubing AMP Special Industries Bel-Art Products Chromatronix Corning Glass Works Crawford Fitting Co. Fisher Scientific Co. GCA/Precision Scientific General Valve Corp. Hamilton Co. Hruden Laboratory Products Kaufman Glass Co. Kontes Kontes/Martin. Inc. LKB Instruments, Inc. Mallinckrodt Chemical Works, Science Products Div. Mallinckrodt Chemical Works, Plastics Div. Manostat Corp. Mercer Glass Works, Inc. NalgeCo. Norton Co. Owens-Illinois, Inc. Parker-Hannifin Corp., Brass Products Div. Parker-Hannifin Corp., Plastic Div. Parker-Hannifin Corp., Tube Fitting Div. Plasmatech Co. Precision Forming & Stamping Co. Quartz General Corp. Scientific Glass Engineering Pty., Ltd. Arthur H. Thomas Co. To m co
CONTAINERS AND CANS see also cylinders Air Products & Chemicals. Inc. Atlas Electric Devices Co. Bel-Art Products Bellco Glass, Inc. S. Blickman, Inc. Corning Glass Works Dynalab Corp. Ellisco, Inc. FEDESCO Fisher Scientific Co. General Scientific Equipment Co. Interplastic Corp. Kaufman Glass Co. Mallinckrodt Chemical Works, Science Products Div. Mallinckrodt Chemical Works, Plastics Div. Nalge Co. Nalgene Industrial Div. Ney Metals, Inc. Owens-Illinois, Inc. Pierce Chemical Co. Precision Sampling Corp. Pyles Industries, Inc. Quartz General Corp. Scientific Specialties Service, Inc. W. S. Shamban & Co. Terriss-Consolidated Industries Turner Co. U. S. Fused Quartz Co,, Inc. WSF Industries, Inc.
CONTAINERS, low temperature — see also flashs, Dewar Ace Glass, Inc. Air Products & Chemicals, Inc. Amersil, Inc. Andonian Cryogenics, Inc. Apex Scientific Co. The Bellacour Co. Buchler Instruments Cincinnati Sub-Zero Products, Inc. Coleman-Delmar Glass Products Corning Glass Works CRYENCO Cryogenic Associates Cryogenic Technology, Inc. Eck & Krebs, Inc. Ellisco, Inc. Fisher Scientific Co. Gardner Cryogenics Div. Haake, Inc. Hotpack Corp. Kaufman Glass Co. Kensington Scientific Corp. Kontes Kontes/Martin, Inc. Lab Glass. Inc. Lab-Line Instruments, Inc Minnesota Valley Engineering Nalge Co. Nalgene Industrial Div. Neslab Instruments, Inc. Optoelectronics, Inc. Polyfoam Packers Corp. Pope Scientific, Inc. Quartz General Corp. Radiation Facilities, Inc. REVCO, Inc. Ruska Instrument Corp. Scientific Glass & Instruments, Inc. Scientific Manufacturing Industries SGA Scientific Inc. Superior Air Products Co. Syncor Products Co., Inc. Thermovac Industries Corp. Union Carbide Corp., Linde Div. U. S. Fused Quartz Co., Inc. Wheaton Scientific WSF Industries, Inc.
CONTAINERS, sample Atlas Electric Devices Co. Bel-Art Products The Bellacour Co. Chemplast, Inc. Chromatronix Corning Glass Works Curtin Scientific Co. The Duriron Co., Inc. Ellisco, Inc. Fisher Scientific Co. Hoke Incorporated Hruden Laboratory Products Kaman Sciences Corp. Kaufman Glass Co. Kontes Kontes/Martin, Inc. Mallinckrodt Chemical Works, Science Products Div. Mallinckrodt Chemical Works, Plastics Div.
LABORATORY
GUIDE
CONTAINERS, sample COUPLINGS, pipe tubing Nalge Co. Ney Metals, Inc. Owens-Illinois, Inc. Packard Instrument Co., Inc. Peel-A-Way Scientific Pierce Chemical Co. Polyfoam Packers Corp. Pope Scientific, Inc. Precision Sampling Corp. Pro-Tech,Inc. Radiation Facilities, Inc. Regis Chemical Co. Scientific Glass & Instruments, Inc. Scientific Specialties Service, Inc. Sherwood Medical Industries, Inc. Arthur H. Thomas Co. Wheaton Scientific
CONTROL, frequency indicator Anadex Instruments, Inc. Atlantic Research Corp. Automatic Switch Co. General Electric Co. Telmar, Inc. Weston Instruments, Inc.
CONTROL SYSTEMS — see also electronic controls
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Acoustica Associates, Inc. Allen-Bradley Co. Alnor Instrument Co. Ametek/U.S. Gauge Analytical Measurements, Inc. Aquatronics, Inc. Associated Electrical Industries International Ltd. Atlantic Research Corp. Automatic Switch Co. Automatic Timing & Controls Co. Babcock & Wilcock Co., Power Generation Div. Bailey Meter Co. Β & F Instruments, Inc. Barber-Colman Co. Barnebey-Cheney Beckman Instruments, Inc. Bella Mowell The Bendix Corp., Process Instruments Div. Bl F Biomed Instruments, Inc. Blue M Electric Co. Bristol Div. of Acco Brooks Instrument Div. BVS, Inc. B/W Controls Inc. Chatham Controls Corp. Circle Seal Corp. Conrac Corp., Cramer Div. Control Equipment Corp. Corning Glass Works Corning Scientific Instruments Curtiss Engineering & Research G. W. DahlCo., Inc. Daniel Industries, Inc. Delavan Electronics Inc. DEVCO Engineering, Inc. Diamond Power Specialty Corp. Digital Equipment Corp. The Duriron Co., Inc. Dwyer Instruments, Inc. Dynage, Inc. Dynamic Data Corp. Dynasciences Corp. Edwards High Vacuum, Inc. Emerson Electric Co., White-Rogers Div. En-Cer Inc. Enerpac Fenwal Inc. Fischer & Porter Co. The Foxboro Co. General Electric Co. General Electric Co., Nuclear Power Generation Control Dept. Gulton Industries, Inc. Halmar Electronics, Inc. The Hays Corp. Honeywell, Inc., Aerospace & Defense Group Honeywell, Inc., Process Control Div. Honeywell, Inc., Residential Div. Κ. Η. Huppert Co., Inc. Industrial Nucleonics Corp. Industrial Systems Corp. Intertech Corp. ITT Barton Kay-Ray, Inc. Kent Cambridge Instrument Co. Kontes Lake Shore Cryotronics, Inc. Leeds & Northrup Co. Leslie Co. Lindberg Luft Instruments, Inc. Lumenite Electronic Corp. Magna Corp. Marietta Apparatus Co.
114 LG AUGUST 1974
Martin-Decker Co. Milletron, Inc. Monsanto Co. Myron L Co. National Sonics Non-Linear Systems, Inc. Nuclear Research Corp. Nuclide Corp. The Ohmart Corp. Payne Engineering Co. Phys-Chemical Research Corp. Power Control Corp. Presin Co., Inc. Research, Inc. Research Assistants Corp. RFL Industries, Inc. Robertshaw Controls Co. Robertshaw Controls Co., Industrial Instrumentation Div. Shimadzu Seisakusho, Ltd. Simpson Electric Co. Spectromagnetic Industries C. W. Stevens, Inc. The Superior Electric Co. Systron-Donner Corp. Telmar, Inc. Texas Instruments, Inc. Texas Instruments, Inc., Digital Systems Div. Thermo Electric Co., Inc. Thermolyne Corp. Theta Instrument Corp. United Electric Controls Co. Universal Interloc, Inc. Veeder-Root Vulcan Laboratories, Inc. WeatherMeasure Corp. West Instrument Westinghouse Electric Corp., Computer & Instrumentation Div. Yellow Springs Instrument Co., Inc.
CORE ANALYSIS EQUIPMENT Datapulse Harry W. Dietert Co.
COULOMBMETERS Keithley Instruments, Inc. Koslow Scientific Co. Sargent-Welch Scientific Co. Vari-Tech Co.
COULOMETERS Antek Instruments, Inc. Brinkmann Instruments, Inc. Indiana Instrument & Chemical Corp. M-T Electronics, Inc. Utopia Instrument Co.
COUNTERCURRENT DISTRIBUTION APPARATUS Brinkmann Instruments, Inc. Buchler Instruments E-C Apparatus Corp. Lab-Line Instruments, Inc Ouickfit
COUNTERS bacteriological
CONTOUR MEASURING PROJECTORS Dynamic Data Corp. Nikon, Inc. Projectina USA Rank Precision Industries, Inc. WeatherMeasure Corp.
COOLING DEVICES — see also refrigerators and refrigerating equipment Aardvark Instruments, Inc. Andonian Cryogenics, Inc. Apex Scientific Co. Bench Scale Equipment Co. Blue M Electric Co. Bonn Aluminum & Brass Corp. Brinkmann Instruments, Inc. Cambridge Thermionic Corp. Chemical Equipment Corp. Cincinnati Sub-Zero Products, Inc. Cryogenic Technology, Inc. Dean Products, Inc. Eberbach Corp. Electronics & Alloys, Inc. Carlo ErbaS.p.A. FEDESCO Fisher Scientific Co. Frigitemp Hospital & Laboratory Equipment Corp. FTS Systems, Inc. GCA/Precision Scientific General Devices, Inc. Haake, Inc. Hankison Corp. Harris Mfg. Co., Inc. Heil Process Equipment Corp. Hotpack Corp. Humphreys Corp. Kelvinator Commercial Products, Inc. Kontes Lab-Line Instruments, Inc Lake Shore Cryotronics, Inc. Lawler Mfg., Inc. Arthur D. Little, Inc. LKB Instruments, Inc. Mayer Refrigerating Engineers. Inc. McLean Engineering Labs. Paul Mueller Co. Neslab Instruments, inc. Niagara Blower Co. Podbielniak, Inc. PolyScience Corp. Polysciences, Inc. REVCO, Inc. Sargent-Welch Scientific Co. Savant Instruments, Inc. Schuco Scientific Systems Corp. Shimadzu Seisakusho, Ltd. Techne Incorporated Technics, Inc. Tenney Engineering, Inc. Vortec Corp. Warren/Sherer Div. Wilkens-Anderson Co.
American Instrument Co. Artek Systems Corp. Coulter Electronics, Inc. E. I. du Pont de Nemours S Co., inc. Fisher Scientific Co. A. Gallenkamp and Co. Ltd. Image Analysing Computers. Inc. Johnston Laboratories, Inc. Klett Manufacturing Co., Inc. Lab-Line Instruments, Inc New Brunswick Scientific Co., Inc. Science Spectrum, Inc. Ivan Sorvall, Inc. Technilab Instruments, Inc. Veeder-Root Wilson Diagnostics, Inc.
Relay Specialties, Inc. Royco Instruments, Inc. Simpson Electric Co. SSR Instruments Co. Stoelting Co. Systron-Donner Corp. Technilab Instruments, Inc. Tektronix, Inc. Theta Instrument Corp. Trio Laboratories, Inc. Vangard Systems, Inc. Veeder-Root WeatherMeasure Corp. Weston Instruments, Inc.
gas proportional Amperex Electronic Corp. Diano Corp., Industrial X-Ray Div. EON Harshaw Chemical Co.. Crystal S Electronic Products Dept. Johnston Laboratories, Inc. LND, Inc. Nuclear Equipment Chemical Corp. Nuclear Measurements Corp. Reuter-Stokes Canada, Ltd.
particle Analog Technology Corp. Artek Systems Corp. Bio/Physics Systems, Inc. Climet Instruments Co. Coulter Electronics, Inc. E. I. du Pont de Nemours & Co., Inc. GCA Technology Div. Image Analysing Computers, Inc.' Millipore Corp. Research Appliance Co. Science Spectrum, Inc. Ivan Sorvall, Inc.
photon Amperex Electronic Corp. Analog Technology Corp. EON Galileo Electro-Optics Corp. Hamamatsu Corp. Hruden Laboratory Products Japan Spectroscopic Co., Ltd. Mech-Tronics Nuclear Nuclear Medical Systems, Inc. ORTEC Incorporated Scientific Resources, Inc. SSR Instruments Co.
digital Anadex Instruments, Inc. Analog Devices, Inc. Atlantic Research Corp. Automatic Pump & Equipment Co. Automatic Timing & Controls Co. Cambridge Thermionic Corp. Canberra Industries, Inc. Chrono-Log Corp. Clay Adams Conrac Corp., Cramer Div. Coulter Electronics, Inc. Dana Labs, Inc. Data Graphics Corp. The Denominator Co., Inc. Dynamic Data Corp. Dynasciences Corp. The Ealing Corp. Eldorado EiectrodataCorp. ElectrodataConcepts, Inc. Elscint Inc. Engler Instrument Co. Esterline Angus Fisher Scientific Co. John Fluke Mfg. Co.. Inc. General Radio Co. Hewlett-Packard Co., (Calif.) The Hickok Electrical Instrument Co. Howell Instruments, Inc. ItekCorp. Japan Spectroscopic Co.. Ltd. Keltron Corp. Kessler-Ellis Products Co. Lab-Line Instruments, Inc LaPine Scientific Co. LFECorp. Marietta Apparatus Co. Meylan Stopwatch Corp. Milletron, Inc. MITS, Inc. Monsanto Co. Newport Labs.. Inc. Nicolet Instrument Corp. Non-Linear Systems, Inc. Nuclear Equipment Corp. Nuclide Corp. ORTEC Incorporated Perkin-Elmer Corp. Philips Electronic Instruments, Inc. Precision Products Div. Presin Co.. Inc.
time interval Anadex Instruments, Inc. Artisan Electronics Corp. Automatic Timing & Controls Co. Β & Β Motor & Control Corp. Chrono-Log Corp. Clay Adams Conrac Corp., Cramer Div. Dana Labs, Inc. Data Graphics Corp. Datametrics Dynasciences Corp. E-H Research Laboratories, Inc. Eldorado Electrodata Corp. Electrodata Concepts, Inc. Engler Instrument Co. John Fluke Mfg. Co., Inc. General Radio Co. Heath/Schlumberger Instruments Hewlett-Packard Co.. (Calif.) The Hickok Electrical Instrument Co. Keltron Corp. Kessler-Ellis Products Co. Lab-Line Instruments, Inc Meylan Stopwatch Corp. Monitor Labs., Inc. Monsanto Co. Nicolet Instrument Corp. Nuclide Corp. ORTEC Incorporated Precision Products Div. Scientific Products Simpson Electric Co. Stoelting Co. Sunshine Scientific Systron-Donner Corp. Technilab Instruments, Inc. Tektronix, Inc. Theta Instrument Corp. Veeder-Root
COUPLINGS, pipe & tubing Autoclave Engineers, Inc. Cajon Co. Carpart Corp. Chemplast, Inc. Corning Glass Works
LABORATORY
GUIDE
COUPLINGS, pipe and tubing CRYSTALS Fischer & Porter Co. Ideal Aerosmith, Inc. Imperial-Eastman Corp. Manostat Corp. Nalgene Industrial Div. Parker-Hannifin Corp., Brass Products Div. Parker-Hannifin Corp., Tube Fitting Div. Plasmatech Co. Scientific Glass Engineering Pty., Ltd. Uniroyal, Inc. Victaulic Company of America
CRUCIBLES
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Ace Glass, Inc. Amersil, Inc. Atomergic Chemetals Co. Bel-Art Products Wm. Boekel & Co., Inc. Cerac, Inc. Chemplex Industries, Inc. Coors Porcelain Co. Corning Glass Works Harry W. Dietert Co. Engelhard Minerals & Chemicals Corp., Engelhard Industries Div. Fisher Scientific Co. Fish-Schurman Corp. GCA/Precision Scientific General Electric Co., Lamp Glass Dept. Kennametal Inc. Leco Corp. Matthey Bishop, Inc. Met-Bay, Inc. National Ceramic Products Co. Norton Co. (Mass) Oregon Metallurgical Corp. Selas Flotronics Syncor Products Co., Inc. Thermal American Fused Quartz Co. Arthur H. Thomas Co. Ultra Carbon Corp. U. S. Fused Quartz Co., Inc. VAR-LAC-OID Chemical Co. Zena Co. Zircoa
CRUSHERS, GRINDERS, MILLS, PULVERIZERS AND ACCESSORIES Angstrom, Inc. Bartlett-Snow Products Bico, Inc. Chemical & Pharmaceutical Industry Co., Inc. Chemplex Industries, Inc. Crescent Dental Mfg. Co. Cyclo Sciences, Inc. Denver Equipment Div. Farrel Co. FËDESCO Fisher Scientific Co. Fluid Energy Processing & Equipment Co. GEOSCorp. Gifford-Wood, Inc. Global Process Equipment, Inc. N. Hunt Moore & Associates, Inc. Jacobson Machine Works, Inc. Jeffrey Manufacturing Co. Kontes/Martin, Inc. Majac Div. MikroPul Div. Franklin Miller, Inc. MSI Industries, Inc. Norton Co. Pitchford Industries Inc. Plastomer Corp. Progressive Exploration Products Prolabo Charles Ross & Son Co. Schuco Sharpies-Stokes Div. The Strong-Scott Mfg. Co. Sturtevant Milt Co. Technics, Inc. Tekmar Co. Thermovac Industries Corp. Arthur H. Thomas Co. The Torsion Balance Co. Tri-R Instruments, Inc. Zena Co.
CRYOGENIC EQUIPMENT cryogenic containers — see also flasks, Dewar Ace Glass, Inc. Airco, Inc. Air Products & Chemicals, Inc. Almac Cryogenics, Inc. American Magnetics, Inc. Amersil, Inc. Andonian Cryogenics, Inc.
116 LG AUGUST 1974
Apex Scientific Co. The Bellacour Co. Bruker-Magnetics, Inc. Cal-Glass For Research, Inc. Carpenter Technology Corp. Cincinnati Sub-Zero Products, Inc. Coleman-Delmar Glass Products CRYENCO Cryogenic Associates Cryogenic Research Co., Inc. Cryogenic Technology, Inc. Curtin Scientific Co. Custom Glassblowing Service Dean Products, Inc. Elscint Inc. Fisher Scientific Co. Gardner Cryogenics Div. Harrick Scientific Corp. Hotpack Corp. Janis Research Co., Inc. Kaufman Glass Co. Kensington Scientific Corp. Kontes Kontes/Martin, Inc. Lab Glass, Inc. Lab-Line Instruments, Inc Liquid Carbonic Corp. Materials Research Corp. Minnesota Valley Engineering Nalge Co. Nalgene Industrial Div. National Cryogenics Corp. Polyfoam Packers Corp. Pope Scientific, Inc. Precision Forming & Stamping Co. Quartz General Corp. Radiation Facilities, Inc. REVCO, Inc. Royal Industries, Inc. Scientific Glass & Instruments, Inc. Scientific Manufacturing Industries SGA Scientific Inc. Superior Air Products Co. Syncor Products Co., Inc. Tekmar Co. Thermovac Industries Corp. Union Carbide Corp., Linde Div. U. S. Fused Quartz Co., Inc. The VirTisCo. Wheaton Scientific WSF Industries, Inc.
cryogenic controls Airco Cryogenics Air Products & Chemicals, Inc. Almac Cryogenics, Inc. Andonian Cryogenics, Inc. Artronix, Inc. Bailey Meter Co. Circle Seal Corp. Coleman-Delmar Glass Products Cooke Vacuum Products, Inc. CRYENCO Cryogenic Associates Cryogenic Technology, Inc. D& W Industries, Inc. Delavan Electronics Inc. Elscint Inc. Fenwal Inc. High Vacuum Equipment Corp. ITT Barton Janis Research Co., Inc. Kratos Lake Shore Cryotronics, Inc. Luft Instruments, Inc. Manostat Corp. Minnesota Valley Engineering Modern Engineering Co., Inc. National Sonics Patentrol Corp. Princeton Applied Research Corp. Statham Instruments, Inc. Superior Air Products Co. Torr Vacuum Products Union Carbide Corp., Linde Div. Veeco Instruments, Inc. WeatherMeasure Corp.
cryogenic potentiometer controllers and indicators Almac Cryogenics, Inc. Andonian Cryogenics, Inc. CRYENCO Cryogenic Associates Enraf-Nonius, Inc. Fenwal Inc. Hy-Cal Engineering Kratos Lake Shore Cryotronics, Inc. Leeds & Northrup Co. Thermo Electric Co.. Inc. Union Carbide Corp., Linde Div. WeatherMeasure Corp.
cryogenic pumps Airco, Inc. Airco Cryogenics Air Products & Chemicals, Inc. American Instrument Co. Andonian Cryogenics, Inc. Associated Electrical Industries International Ltd. Balzers High Vacuum Corp. Central Scientific Co. Coleman-Delmar Glass Products Cooke Vacuum Products, Inc. Cryogenic Technology, Inc. CVI Corp. The Fluorocarbon Co. Gardner Cryogenics Div. Granville-Phillips Co. High Voltage Engineering Corp. Kobe, Inc. Liquid Carbonic Corp. 3M Co., New Business Ventures Div. McPherson Instrument Corp. Patentrol Corp. Perkin-Elmer Ultek, Inc. Pye Unicam Ltd. Superior Air Products Co. Union Carbide Corp., Linde Div. Varian Vacuum Div.
cryogenic refrigerators Airco Cryogenics Air Products & Chemicals, Inc. Almac Cryogenics, Inc. Bohn Aluminum & Brass Corp. Bruker-Magnetics, Inc. Cincinnati Sub-Zero Products, Inc. CRYENCO Cryogenic Associates Cryogenic Technology, Inc. CVI Corp. Frigitemp Hospital & Laboratory Equipment Corp. FTS Systems, Inc. Gardner Cryogenics Div. Hotpack Corp. Janis Research Co., Inc. Keivinator Commercial Products, Inc. Kontes Kontes/Martin, Inc. Lake Snore Cryotronics, Inc. Arthur D. Little, Inc. Minnesota Valley Engineering Pye Untcam Ltd. REVCO, Inc. Sargent-Welch Scientific Co. Sargent-Welch Scientific Co., Vacuum Products Div. Superior Air Products Co. Technics, Inc. Union Carbide Corp., Linde Div. The VirTisCo. Webber Manufacturing Co., Inc.
cryogenic thermometers Air Products & Chemicals, Inc. Almac Cryogenics, Inc. American Magnetics, Inc. Andonian Cryogenics, Inc. Columbia Superconductor and Cryogenics Co., Inc. Corning Glass Works Cryogenic Technology, Inc. Doric Scientific Corp. Fenwal Inc. Hy-Cal Engineering Janis Research Co., Inc. Kahl Scientific Instrument Corp. Lake Shore Cryotronics, Inc. Leeds & Northrup Co. The Lewis Engineering Co. Minco Products, Inc. Newport Labs., Inc. Princeton Applied Research Corp. RdFCorp. Ryan Instruments, Inc. Union Carbide Corp., Linde Div. United Electric Controls Co. Victory Engineering Corp. The VirTis Co. Weksler Instruments Corp. West Instrument
cryogenic valves Almac Cryogenics, Inc. American Instrument Co. Andonian Cryogenics, Inc. Autoclave Engineers, Inc. Automatic Switch Co. Badger Meter, Inc. Circle Seal Corp. Coleman-Delmar Glass Products Conoflow Corp. Cooke Vacuum Products, Inc. CRYENCO
CVI Corp. Dragon Valves, Inc. The Duriron Co., Inc. The Fluorocarbon Co. Roger Gilmont 1 nstruments, Inc. High Vacuum Equipment Corp. Hills-McCanna Hoke Incorporated ITT Hammel-Dahl/Conoflow Jamesbury Corp. Janis Research Co., Inc. Jerguson Gage & Valve Co. Kontes Lab Glass, Inc. Lake Shore Cryotronics, Inc. Patentrol Corp. Precision Products Div. Radiation Facilities, inc. Statham Instruments, Inc. Torr Vacuum Products Union Carbide Corp., Linde Div. United Electric Controls Co. Worcester Controls Corp.
CRYOSCOPES Advanced Instruments, Inc. Fiske Associates, Inc. Precision Systems, Inc. Prolabo Arthur H. Thomas Co. Valley Forge Instrument Co., Inc.
CRYOSTATS Air Products & Chemicals, Inc. Alpha Scientific, Inc. American Optical Corp., Scientific Instrument Div. Andonian Cryogenics, Inc. The Bellacour Co. Brinkmann Instruments, Inc. Bruker-Magnetics, Inc. Cahn Instruments Canberra Industries, Inc. Coleman-Delmar Glass Products Columbia Superconductor and Cryogenics Co., Inc. CRYENCO Cryogenic Associates Cryogenic Research Co., Inc. Cryogenic Technology, Inc. Elscint Inc. Gardner Cryogenics Div. Harris Mfg. Co., Inc. High Voltage Engineering Corp. Janis Research Co., Inc. Japan Spectroscopic Co., Ltd. Kontes Kontes/Martin, Inc. Minnesota Valley Engineering ORTEC Incorporated Polyfoam Packers Corp. Princeton Applied Research Corp. Setaram Superior Air Products Co. Theta Industries, Inc. Valley Forge Instrument Co., Inc. Zena Co.
CRYSTAL GROWING APPARATUS Amersil, Inc. Astro Industries, Inc. Atomergic Chemetals Co. Autoclave Engineers, Inc. The Bellacour Co. Humphreys Corp. Industrial Systems Corp. Lepel High Frequency Labs., Inc. Arthur D. Little, Inc. Materials Development Corp. Materials Research Corp. Matthey Bishop, Inc. Pressure Products Industries Princeton Organics, Inc. Quartz General Corp. Semi-Elements, Inc. Technics, Inc. Tem-Pres Research Div. U. S. Fused Quartz Co., Inc.
CRYSTALS laser, maser and accessories Associated Electrical Industries International Ltd. Atomergic Chemetals Co. Dell Optics Co., Inc. Eagle-Picher Industries, Inc. Harshaw Chemical Co., Crystal & Electronic Products Dept.
LABORATORY
GUIDE
CRYSTALS DENSITY MEASURING EQUIPMENT Isomet Corp. Janos Optical Corp. Karl Lambrecht Corp. Arthur D. Little, Inc. Materials Research Corp. Optical Industries, Inc. Optovac. Inc. Perkin-Elmer Corp. Quartz Products Corp. Raytheon Co., Microwave & Power Tube Div. Union Carbide Corp., Materials Systems Div. United Mineral & Chemical Corp. VAR-LAC-OID Chemical Co.
optical, IR, UV, X-ray -- see also radiation equipment, crystals
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Advanced Metals Research Corp. Aremco Products, Inc. Atomergic Chemetals Co. Barnes Engineering Co. Beckman Instruments, Inc. Blake Industries, Inc. Broomer Research Corp. Browmar Labs., Inc. Dell Optics Co.. Inc. Diano Corp. Diano Corp., Industrial X-Ray Div. Eastman Kodak Co. Electronics & Alloys, Inc. Esco Products F& J Scientific General Electric Co., Analytical Measurements Harshaw Chemical Co., Crystal & Electronic Products Dept. R. J. Harvey Instrument Corp. Image Analysing Computers, Inc. International Crystal Laboratories Isomet Corp. Janos Optical Corp. Kontes Karl Lambrecht Corp. Laser Optics, Inc. LeMont Scientific, Inc. Arthur D. Little, Inc. Optical Industries, Inc. Optovac, Inc. Perkin-Elmer Corp. Philips Electronic Instruments, Inc. Pomfret Research Optics Inc. Quartz Products Corp. Rank Precision Industries Ltd., Analytical Div. Rank Precision Industries, Inc. Rigaku/USA Rudolph Instruments Scientific Services Co. Teledyne Isotopes (N.J.) Union Carbide Corp., Materials Systems Div. Wilks Scientific Corp.
single Aremco Products, Inc. Associated Electrical Industries International Ltd. Atomergic Chemetals Co. Barnes Engineering Co. Bell & Mowell Eagle-Picher Industries. Inc. EM Laboratories, Inc. Esco Products Hruden Laboratory Products Image Analysing Computers, Inc. International Crystal Laboratories Isomet Corp. Janos Optical Corp. Karl Lambrecht Corp. Lepel High Frequency Labs., Inc. Arthur D. Little, Inc. Materials Development Corp. Materials Research Corp. Monsanto Co. Optical Industries, Inc. Optovac, Inc. Packard Instrument Co., Inc. Princeton Organics, Inc. Quartz Products Corp. Semi-Elements, Inc. Sloan Technology Corp. Technics, Inc. Teledyne Isotopes (N.J.) Union Carbide Corp., Materials Systems Div. United Mineral & Chemical Corp. VAR-LAC-OID Chemical Co.
CULTURE APPARATUS Ace Glass, Inc. Aquarium Systems Inc. Bellco Glass, Inc. Bench Scale Equipment Co
118 LG AUGUST 1974
BioQuest Bio-Rad Laboratories Clay Adams Corning Glass Works E-C Apparatus Corp. Fermentation Design, Inc. Fisher Scientific Co. Forma Scientific, Inc. A. Gallenkamp and Co. Ltd. GCA/Precision Scientific Grand Island Biological Co. Harvard Apparatus Co., Inc. Hotpack Corp. Kaufman Glass Co. Kontes Lab Glass, Inc. Lab-Line Instruments, Inc MISCO Scientific Nalge Co. New Brunswick Scientific Co., Inc. Owens-Illinois, Inc. Scientific Glass & Instruments, Inc. Scientific Industries, Inc. Scientific Specialties Service, Inc. SGA Scientific Inc. Sherwood Medical Industries, Inc. Arthur H. Thomas Co. The VirTis Co. Wheaton Scientific Wilson Diagnostics, Inc.
CULTURE MEDIA Aquarium Systems Inc. BioQuest Colorado Serum Co. Corning Glass Works Difco Laboratories EM Laboratories, Inc. General Biochemicals Grand Island Biological Co. Hyland Johnston Laboratories, Inc. Microbiological Associates, Inc. Polysciences, Inc. Schwarz/Mann Wilson Diagnostics, Inc.
CUSTOM BUILT DEVICES FOR ELECTRICAL-NUCLEAR INDUSTRY Analog Devices, Inc. Atomic Products Corp. Automatic Switch Co. Canberra Industries, Inc. H. B. Chapman, Jr. & Co. W. C. Dillon & Co., Inc. Extranuclear Labs., Inc. General lonex Corp. R. J. Harvey Instrument Corp. Industrial Systems Corp. Ionics, Inc. Janos Optical Corp. Laser Technology, Inc. Micromedic Systems. Inc. Middlesex General Ind. MSA Research Corp. Nuclear Materials & Equipment Corp. Nuclear Measurements Corp. Panametrics, Inc. Reactor Experiments, Inc. Technics, Inc. Teledyne Philbrick Ultra Carbon Corp. United Technical Corp. Vangard Systems, Inc. WSF Industries, Inc. Zeebac Inc.
CYLINDERS — see also containers and cans Ace Glass, Inc. Airmatic/Beckett-Harcum Air Products & Chemicals, Inc. Andonian Cryogenics, Inc. Bel-Art Products The Bellacour Co. S. Blickman, Inc. Central Scientific Co. Chatas Glass Co. Corning Glass Works Curtin Scientific Co. Custom Glassblowing Service Doerr Glass Co. Dynalab Corp, Ellisco, Inc. Enerpac Fisher Scientific Co. A. Gallenkamp and Co. Ltd. Hoke Incorporated Imperial-Eastman Corp. Interplastic Corp. Janos Optical Corp. Kaufman Glass Co.
Kontes Lab Glass, Inc. Mallinckrodt Chemical Works, Science Products Div. Mallinckrodt Chemical Works, Plastics Div. Matheson Gas Products Mercer Glass Works, Inc. Middlesex General Ind. Paul Mueller Co. Nalge Co. Ney Metals, Inc. Precision Forming & Stamping Co. Quartz General Corp. Radiation Facilities, Inc. Scientific Gas Products Inc. Scientific Glass & Instruments, Inc. SGA Scientific Inc. W. S. Shamban & Co. Turner Co. Wheaton Scientific WSF Industries, Inc.
DATA STORAGE & READOUT EQUIPMENT Adams-Smith, Inc. Atden Electronic & Impulse Recording Equipment Co., Inc. Analog Devices, Inc. Applied Automation, Inc. Artronix, Inc. B-D Spear Medical Systems Bruker-Magnetics, Inc. Cambridge Thermionic Corp. Conrac Corp., Cramer Div. Control Equipment Corp. DATAcap, Inc. Data Graphics Corp. Denco Research Esterline Angus Finnigan Corp. GCA/David W. Mann Co. Gould, Inc., Instrument Systems Div. Hewlett-Packard Co. Honeywell Test Instruments Div. Howell Instruments, Inc. INAX Instruments Ltd. Instrulab, Inc. Kinemetrics, Inc. Leeds & Northrup Co. Martin-Decker Co. Monitor Labs., Inc. Non-Linear Systems, Inc. Nuclide Corp. Presin Co., Inc. Scientech, Inc. Systems Industries, Inc. Systems Instruments Research, Inc.
See the VARIAN instrument data systems ad on page 19 Systron-Donner Corp. Τ & Τ Technology Tektronix, Inc. Tetrahedron Associates, Inc. Texas Instruments. Inc., Digital Systems Div. Veeder-Root WeatherMeasure Corp.
DENSITOMETERS American Instrument Co. Antech, Inc. Artronix, Inc. Atago Optical Works Co., Ltd. Automation Products, Inc. Baird-Atomic, Inc. Beckman Instruments, Inc. Biomed Instruments, Inc. Brinkmann Instruments, Inc. Canalco, Inc. Cenco X-Ray Co. Chrono-Log Corp. Clifford Instruments, Inc. Controlled Atmosphere, Inc. Daniel Industries. Inc. E-C Apparatus Corp. Enraf-Nonius, Inc. Carlo Erba S.p.A. Farrand Optical Co., Inc. Gam Rad, Inc. Gelman Instrument Co. Halliburton Services Karl Heitz, Inc. Helena Laboratories
Image Analysing Computers, Inc. Instrumentation Laboratory Inc. Instrumentation Specialities Co. International Light, Inc. Itek Corp. ITT Barton Joyce, Loebl & Co. Kontes Lab Glass, Inc. Macbeth Color & Photometry Optronics International, Inc. ORTEC Incorporated Perkin-Elmer Corp. Photovolt Corp. Rank Precision Industries Ltd., Analytical Div. Research Appliance Co. Rudolph Instruments Sargent-Welch Scientific Co. Sargent-Welch Scientific Co., Vacuum Products Div. Schoeffel Instrument Corp. Science Spectrum, Inc. Scientific Industries, Inc. Shimadzu Seisakusho, Ltd. Spatial Data Systems, Inc. Stoelting Co. Syntex Analytical Instruments Toyo Kagaku Sangyo Co. Ltd. Transidyne General Corp. Waters Instruments, Inc. Zeebac Inc. Carl Zeiss, Inc. Zena Co.
DENSITOMETERS, micro Antech, Inc. Artronix, Inc. Baird-Atomic, Inc. Beckman Instruments, Inc. Biomed Instruments, Inc. Canalco, Inc. E-C Apparatus Corp. Enraf-Nonius. Inc. Gaertner Scientific Corp. Gamma Scientific, Inc. GCA/David W. Mann Co. Gelman Instrument Co. Helena Laboratories Instrumentation Laboratory Inc. Jarrell-Ash Div. Joyce, Loebl & Co. Optronics International, Inc. ORTEC Incorporated Perkin-Elmer Corp. PhotoMetrics, Inc. Rank Precision Industries Ltd., Analytical Div. Rank Precision Industries, Inc. Rigaku/USA Rudolph Instruments Scientific Resources, Inc. Shimadzu Seisakusho, Ltd. Spatial Data Systems, Inc. Syntex Analytical Instruments Transidyne General Corp. Zeebac Inc. Carl Zeiss, Inc.
DENSITY GRADIENT FRACTIONATOR Buchler Instruments Custom Glassblowing Service Gilford Instrument Labs., Inc. Hoefer Scientific Instruments Instrumentation Specialities Co. MISCO Scientific
DENSITY MEASURING EQUIPMENT Anacon, Inc. Anderson Laboratories, Inc. Àntech, Inc. Artronix, Inc. Automation Products. Inc. Baroid Div. Beckman Instruments, Inc. The Bendix Corp., Process Instruments Div. Biolar Corp. Broomer Research Corp. Cahn Instruments Canalco, Inc. R. P. Cargille Labs.. Inc. Diamond Power Specialty Corp. Enraf-Nonius, Inc. The Foxboro Co. Gow-Mac Instrument Co. H-B Instrument Co. Image Analysing Computers, Inc. International Light, Inc. ITT Barton Joyce. Loebl & Co. Kay-Ray, Inc. Macbeth Color & Photometry
LABORATORY
GUIDE
DENSITY MEASURING EQUIPMENT DETECTORS, ultraviolet Mettler Instrument Corp. Micromeritics Instrument Corp. MISCO Scientific National Sonics Nuclear Research Corp. The Ohmart Corp. Photobell Co., Inc. Princo Instruments, Inc. Schoeffel Instrument Corp. Scientific Glass & Instruments. I nc. Searle Analytic Inc., Texas Nuclear Div. Shandon Southern Instruments, Inc. Spectro Products, Inc. Syntex Analytical Instruments Techne Incorporated Arthur H. Thomas Co. Transidyne General Corp.
DESICCATORS Ace Glass, Inc. Bel-Art Products The Bellacour Co. Bethlehem Apparatus Co., Inc. Wm. Boekel & Co., Inc. Brinkmann Instruments, Inc. Coast Engineering Laboratory Corning Glass Works Dynalab Corp. Electrothermal Ltd. Fisher Scientific Co. GCA/Precision Scientific Gelman Instrument Co. W. A. Hammond Drierite Co. R. J. Harvey Instrument Corp. Hruden Laboratory Products Kaufman Glass Co. Labconco Corp. Lab Glass, Inc. Lab-Line Instruments, Inc Mercer Glass Works, Inc Nalge Co. Owens-Illinois, Inc. Quartz General Corp. Quickfit SGA Scientific Inc. Thermovac Industries Corp. Arthur H. Thomas Co. The VirTis Co. Wheaton Scientific
DETECTORS carbon monoxide Air Products & Chemicals, Inc. Analytical Instrument Development, Inc. Andros, Inc. Antek Instruments, Inc. Bacharach Instrument Co. Beckman Instruments, Inc. Calibrated Instruments. Inc. DEVCO Engineering, Inc. The Hays Corp. Intertech Corp. Japan Spectroscopic Co., Ltd. Matheson Gas Products MDA Scientific, Inc. Mine Safety Appliances Co. Modern Controls, Inc. Molectron Corp. National Environmental Instruments Inc. Olson Laboratories, Inc. Philips Electronic Instruments, Inc. Scientific Gas Products Inc. Tracor, Inc. United Technical Corp. Victory Engineering Corp. Wilks Scientific Corp.
coulometric Antek Instruments, Inc. DOHRMANN Div. Envirotech Corp. Koslow Scientific Co. LKB Instruments, Inc. Mast Development Co. Modern Controls, Inc. Process Analyzers, Inc. (Tex.) Shimadzu Seisakusho, Ltd. United Technical Corp.
gas Air Products & Chemicals, Inc. American Gas & Chemicals, Inc. American Instrument Co. Analog Technology Corp. Andros, Inc. Antek Instruments, Inc. Aromil Chemical Co. Bacharach Instrument Co. Baroid Div. G. F. Bush Associates Carle Instruments, Inc. Chemtronics, Inc. Core Laboratories, Inc.
LABORATORY GUIDE
CVC Products, Inc. DEVCO Engineering, Inc. DOHRMANN Div. Envirotech Corp. E. I. du Pont de Nemours & Co., Inc. Engelhard Minerals & Chemicals Corp., Engelhard Industries Div. E.O.C.O.M. Carlo Erba S.p.A. Erdco Engineering Corp. General Electric Co., Analytical Measurements General Monitors, Inc. The Hays Corp. Honeywell, Inc., Aerospace & Defense Group Honeywell, Inc., Process Control Div. Houston-Atlas, Inc. International Biophysics Corp. Ionics Research, Inc. Japan Spectroscopic Co., Ltd. Kent Cambridge Instrument Co. Koslow Scientific Co. Lif-O-Gen, Inc. Matheson Gas Products McMillan Electronics Corp. McPherson Instrument Corp. Mine Safety Appliances Co. Modern Controls, Inc. National Environmental Instruments Inc. Philips Electronic Instruments, Inc. Process Analyzers, Inc. (Tex.) Research Appliance Co. Scott Aviation Sunshine Scientific Teledyne Analytical Instruments Tracor, Inc. United States Testing Co., Inc. WEMCO Instrumentation Co.
gas density Antek Instruments, Inc. Applied Automation, Inc. Beckman Instruments, Inc. The Bendix Corp., Process Instruments Div. Chemical Data Systems, Inc. General Monitors, Inc. Gow-Mac Instrument Co. Honeywell, Inc., Process Control Div. Intertech Corp. ITT Barton Phase Separations Ltd. Process Analyzers, Inc. (Tex.) Arthur H. Thomas Co. Victory Engineering Corp.
hall effect Bruker-Magnetics, Inc. The Ealing Corp. Ohio Semitronics, Inc. RFL Industries, Inc. Sprague Electric Co. Walker Scientific, Inc.
infrared Barnes Engineering Co. Bausch & Lomb, Inc., Analytical Systems Div. Beckman Instruments, Inc. Calibrated Instruments, Inc. Coherent Radiation DEVCO Engineering, Inc. Digilab, Inc. Ducon Instruments, Inc. The Ealing Corp. EG&G Inc., Technical Products Group EMR Photoelectric E.O.C.O.M. The Eppley Laboratory, Inc. Fischer & Porter Co. Gamma Scientific, Inc. Gencom Div. General Electric Co., Space Technology Products Hamamatsu Corp. Hewlett-Packard Co., (Calif.) Honeywell, Inc., Aerospace & Defense Group Honeywell, Inc.. Residential Div. International Light, Inc. Intertech Corp. Japan Spectroscopic Co., Ltd. Arthur D. Little, Inc. LND, Inc. Mine Safety Appliances Co. Modern Controls, Inc. Molectron Corp. Ohio Semitronics, Inc. The Ohmart Corp. Olson Laboratories, Inc. Optoelectronics, Inc. Perkin-Elmer Corp. Philips Electronic Instruments, Inc. Photobell Co., Inc. Photovolt Corp. Pye Unicam Ltd.
Rank Precision Industries Ltd., Analytical Div. Rank Precision Industries, Inc. Raytek, Inc. Raytheon Co., Microwave & Power Tube Div. Charles M. Reeder Co., Inc. Scientech, Inc. Scientific Resources, Inc. Sensor Technology, Inc. Shimadzu Seisakusho, Ltd. Tem-Pres Research Div. Texas Instruments, Inc., Digital Systems Div. Victory Engineering Corp. Wilks Scientific Corp.
Perkin-Elmer Corp. Phase Separations Ltd. Process Analyzers, Inc. (Tex.) Pye Unicam Ltd. RdF Corp. Research Assistants Corp. Scientific Resources, Inc. Shimadzu Seisakusho, Ltd. Teledyne Analytical Instruments Thermco Instrument Corp. Thermonetics Corp. Tracor, Inc. Tronac, Inc. United Technical Corp. Varian Instrument Div. Victory Engineering Corp.
leak
toxic gas
Air Products & Chemicals, Inc. American Gas & Chemicals, Inc. Analog Technology Corp. Bacharach Instrument Co. Balzers High Vacuum Corp. Baroid Div. James G. Biddle Co. R. P. Cargille Labs., Inc. Chemical Data Systems, Inc. Chemical Research Services, Inc. Cooke Vacuum Products, Inc. CVC Products, Inc. Daniel Industries, Inc. Datametrics DEVCO Engineering, Inc. E. I. du Pont de Nemours & Co., Inc. Dylon Industries, Inc. Edwards High Vacuum, Inc. Erdco Engineering Corp. Fisher Scientific Co. General Electric Co., Analytical Measurements General Monitors, Inc. Gow-Mac Instrument Co. Hewlett-Packard Co., (Calif.) High Voltage Engineering Corp. Honeywell, Inc.^ Process Control Div. IntecoCorp. Japan Spectroscopic Co., Ltd. Kohtes LND, Inc. Matheson Gas Products Mine Safety Appliances Co. Modern Controls, Inc. Precision Gas Products, Inc. Scientific Resources, Inc. Scott Aviation Shimadzu Seisakusho, Ltd. Sunshine Chemical Corp. Sunshine Scientific Superior Signal Co., Inc. Tescom Corp. Turner Co. Vactronic Lab. Equipment, Inc. Varian Vacuum Div. Veeco/Andar WeatherMeasure Corp.
Air Products & Chemicals, Inc. American Gas & Chemicals, Inc. Analytical Instrument Development, Inc. Andros, Inc. Aromil Chemical Co. Beckman Instruments, Inc. CVC Products, Inc. DEVCO Engineering, Inc. E.O.C.O.M. Erdco Engineering Corp. General Monitors, inc. Houston-Atlas, Inc. Koslow Scientific Co. Manufacturers Engineering & Equipment Corp. Mast Development Co. Matheson Gas Products MDA Scientific, Inc. Mine Safety Appliances Co. Modern Controls, Inc. National Environmental Instruments Inc. Precision Gas Products, Inc. Scott Aviation Sunshine Scientific Tracor, Inc, United States Testing Co., Inc. Wilks Scientific Corp.
radioactive meters Atomic Products Corp. Elscint Inc. EON Hruden Laboratory Products ICN Isotope & Nuclear Div. ICN Life Sciences Group Kahl Scientific Instrument Corp. Nuclear Equipment Chemical Corp. Nuclear Medical Systems, Inc. t h e Nucleus, Inc. Reactor Experiments, Inc. Shimadzu Seisakusho, Ltd. Soltec Corp.
thermal conductivity Analytical Instrument Development, Inc. Antek Instruments, Inc. Applied Automation, Inc. Beckman Instruments, Inc. The Bendix Corp., Process Instruments Div. Carle Instruments, Inc. Chemical Data Systems, Inc. Condyne Instruments Custom Scientific Instruments, Inc. DEVCO Engineering, Inc. DOHRMANN Div. Envirotech Corp. Carlo Erba S.p.A. Fisher Scientific Co. Gow-Mac Instrument Co. The Hays Corp. Honeywell, Inc., Residential Div. Intertech Corp. Kent Cambridge Instrument Co. Leeds & Northrup Co. Manufacturers Engineering & Equipment Corp. Mine Safety Appliances Co. Packard Instrument Co., Inc.
ultrasonic James G. Biddle Co. Branson Instruments, Inc. Delavan Electronics Inc. Hewlett-Packard Co., (Calif.) James Electronics, Inc. National Sonics Philips Electronic Instruments, Inc. Shimadzu Seisakusho, Ltd. Sunshine Scientific Tracor, Inc. Ultrasonic Instruments International Ltd.
ultraviolet Altex Scientific, Inc. American Gas & Chemicals, Inc. American Ultraviolet Co. Atlantic Ultraviolet Corp. Applied Automation, Inc. Bausch & Lomb, Inc., Analytical Systems Div. Beckman Instruments, Inc. Biomed Instruments, Inc. Chromatronix Coherent Radiation The Ealing Corp. EG&G Inc., Technical Products Group EMR Photoelectric The Eppley Laboratory, Inc. Galileo Electro-Optics Corp. Gamma Scientific, Inc. Gelman Instrument Co. Gencom Div. Gilford Instrument Labs., Inc. Glenco Scientific, Inc. Hamamatsu Corp. Harshaw Chemical Co., Crystal & Electronic Products Dept. Hewlett-Packard Co., (Calif.) Honeywell, Inc., Residential Div. International Light, Inc. Intertech Corp. LKB Instruments, Inc. LND, Inc. Manufacturers Engineering & Equipment Corp. McPherson Instrument Corp. Molectron Corp. Olson Laboratories, Inc. Oriel Corp. of America Perkin-Elmer Corp. Pharmacia Fine Chemicals, Inc. Philips Electronic Instruments, Inc. Charles M. Reeder Co., Inc, Schoeffel Instrument Corp. Scientific Services Co. Sensor Technology, Inc. Shimadzu Seisakusho. Ltd. Teledyne Analytical Instruments Ultra Dynamics Corp.
AUGUST 1974 119 LG
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Advanced Metals Research Corp. ΑΕΙ Scientific Apparatus Inc. Amperex Electronic Corp. Atomic Products Corp. Blake Industries, Inc. Browmar Labs., Inc. Canberra Industries, Inc. Diano Corp. Diano Corp., Industrial X-Ray Div. Eberline Instrument Corp. EDAX International, Inc. Enraf-Nonius, Inc. EON Finnigan Corp. Galileo Electro-Optics Corp. Gencom Div. General Electric Co., Analytical Measurements Hamamatsu Corp. Harshaw Chemical Co., Crystal & Electronic Products Dept. Hruden Laboratory Products INAX instruments Ltd. LND, Inc. Materials Research Corp. Molectron Corp. Nuclear Equipment Chemical Corp. Nuclear Equipment Corp. Nuclear Semiconductor The Ohmart Corp. ORTEC Incorporated Philips Electronic Instruments, Inc. Princeton Gamma-Tech, Inc. Quartz Products Corp. Rank Precision Industries Ltd., Analytic Div. Reuter-Stokes Canada, Ltd. Rigaku/USA Shimadzu Seisakusho, Ltd. Teledyne Isotopes (N.J.) Tem-Pres Research Div. Tracor Northern, Inc.
DEW POINT DETERMINATORS Alnor Instrument Co. American Instrument Co. Atkins Technical, Inc. Beckman Instruments, Inc. Central Scientific Co. Climet Instruments Co. Custom Glassblowing Service E. I. du Pont de Nemours & Co., Inc. EG&G Environmental Equipment Div. EG&G Inc., Technical Products Group Engelhard Minerals & Chemicals Corp., Engelhard Industries Div. The Foxboro Co. Harrick Scientific Corp. H-B Instrument Co. Honeywell, Inc., Process Control Div. Ipsen Industries Kahl Scientific Instrument Corp. Kahn & Co., Inc. King Nutronics Corp. Lab Glass, Inc. Lab-Line Instruments, Inc Land Instruments, Inc. Lectrodryer Lindberg Manufacturers Engineering & Equipmen Corp. Pall Trinity Micro Corp. Panametrics, Inc. Process Analyzers, Inc. (Tex.) Pro I a bo Sargent-Welch Scientific Co. Scientific Gas Products Inc. Shaw Moisture Meters Shimadzu Seisakusho, Ltd. Surface Combustion Div. WeatherMeasure Corp. Yellow Springs Instrument Co., Inc.
National Instrument Laboratories, Inc. Omnivector Instruments Qsmonics, Inc. Polysciences, Inc. Pope Scientific, Inc. Sanda, Inc. Arthur H. Thomas Co. Vernitron Medical Products, Inc.
DIELECTRIC MEASURING EQUIPMENT Associated Electrical Industries International Ltd. Balsbaugh Laboratories, Inc. Beckman Instruments, Inc. James G. Biddle Co. Custom Scientific Instruments, Inc. Delsen Corp. Dranetz Engineering Labs., Inc. Dynamic Data Corp. The Foxboro Co. General Radio Co. Haake, Inc. Kahl Scientific Instrument Corp. Leeds & Northrup Co. Mechanical Technology, Inc. M/K Systems, Inc. RFL Industries, Inc. Rohde & Schwarz Sales Co. (USA) Inc. Rutherford Research Products Co. Sargent-Welch Scientific Co. Shimadzu Seisakusho, Ltd. Special Instruments & Machinery Co. Tetrahedron Associates, Inc.
DIFFRACTION GRATINGS see also spectrometers Baird-Atomic, Inc. Bausch & Lomb, Inc., Analytical Systems Div. Bausch & Lomb, SOPD Div. Central Scientific Co. The Ealing Corp. Edmund Scientific Co. Farrand Optical Co., Inc. Gamma Scientific, Inc. Jarrell-Ash Div. J-Y Optical Systems McPherson Instrument Corp. Molectron Corp. Optical Industries. Inc. Perkin-Elmer Corp. Philips Electronic Instruments, Inc. Rank Precision Industries Ltd., Analytical Div. Sargent-Welch Scientific Co. Shimadzu Seisakusho, Ltd. Spex Industries, Inc.
DIFFRACTION, x-ray Advanced Metals Research Corp. ΑΕΙ Scientific Apparatus Inc. Andonian Cryogenics, Inc. Associated Electrical Industries International Ltd. Blake Industries, Inc. Canberra Industries, Inc. Diano Corp. Diano Corp., Industrial X-Ray Div. EDAX International, Inc. Electronics & Alloys, Inc. Enraf-Nonius, Inc. General Electric Co., Analytical Measurements Isomet Corp. Materials Research Corp. Nuclear Equipment Corp. ORTEC Incorporated Philips Electronic Instruments. Inc. Polaroid Corp. Rank Precision Industries Ltd.. Analytical Div. Rigaku/USA Scientific Resources, Inc. Shimadzu Seisakusho, Ltd. Syntex Analytical Instruments
DIALYZERS
DIFFRACTION, x-ray programmers
Amicon Corp. Bellco Glass, Inc. Biomed Instruments, Inc. Βίο-Rad Laboratories Custom Glassblowing Service Damon/IEC Div. Dow Chemical U.S.A. Extracorporeal Medical Specialties, Inc. Hoefer Scientific Instruments Instrumentation Specialities Co. Ionics, Inc. Kaufman Glass Co. Kontron Inc. Milton Roy Co.
ΑΕΙ Scientific Apparatus Inc. Canberra Industries, Inc. Diano Corp. Enraf-Nonius, Inc. General Electric Co., Analytical Measurements Nuclear Equipment Corp. ORTEC Incorporated Philips Electronic Instruments, Inc. Rank Precision Industries Ltd., Analytical Div. Rigaku/USA
122 LG AUGUST 1974
Andonian Cryogenics, Inc. Associated Electrical Industries International Ltd. Balzers High Vacuum Corp. Browmar Labs., Inc. Canberra Industries, Inc. Delaware Scientific Labs., Inc. General Electric Co., Analytical Measurements Hruden Laboratory Products LND, Inc. Materials Research Corp. Philips Electronic Instruments, Inc. Physical Electronics Industries, Inc. Process & Instruments Corp. Rigaku/USA Sargent-Weich Scientific Co. Shimadzu Seisakusho, Ltd. Varian Vacuum Div.
BioQuest Wm. Boekel & Co., Inc. Chemplast, Inc. Coors Porcelain Co. Corning Glass Works Engelhard Minerals & Chemicals C Engelhard Industries Div. Fisher Scientific Co. General Electric Co., Lamp Glass C Hruden Laboratory Products Kaufman Glass Co. Lab Glass, Inc. Mallinckrodt Chemical Works, Scie Products Div. Mallinckrodt Chemical Works, Plas Div. Maryland Plastics, inc. Matthey Bishop, Inc. Mercer Glass Works, Inc. Microbiological Associates, Inc. MISCO Scientific Nalge Co. Owens-Illinois, Inc. W. S. Shamban & Co. Arthur H. Thomas Co. U. S. Fused Quartz Co.. Inc. Wheaton Scientific
DILATOMETERS
DISTILLATION EQUIPM
Ace Glass, Inc. Amersil, Inc. Custom Scientific Instruments, Inc. Harry W. Dietert Co. E. I. du Pont de Nemours & Co.. Inc. Dynatech R/D Co. Gaertner Scientific Corp. General Electric Co., Lamp Glass Dept. Harrop Laboratories Kontes Kontes/Martin, Inc. Lab Glass, Inc. E. Leitz, Inc. The Edward Orton Jr. Ceramic Foundation Rigaku/USA Rutherford Research Products Co. Scientific Glass & Instruments, Inc. SGA Scientific Inc. Tem-Pres Research Div. Thermal American Fused Quartz Co. Theta Industries, Inc.
column packings
Shimadzu Seisakusho, Ltd. Syntex Analytical Instruments
DIFFRACTION EQUIPMENT, electron
DILUTERS, automatic American Instrument Co. American Optical Corp. (Mass.) American Optical Corp., Scientific Instrument Div. The Bellacour Co. Brinkmann Instruments, Inc. Canalco, Inc. Dade Div. Delta Scientific Corp. FEDESCO Fisher Scientific Co. Gilson Medical Electronics, Inc. Glenco Scientific, Inc. Gradko Scientific, Inc. Instrumentation Laboratory Inc. Labindustries LKB Instruments, Inc. The London Co. Manostat Corp. Maurukas Co., Inc. Micromedic Systems, Inc. National Instrument Co., Inc. National Instrument Laboratories, Inc. Nuclear Associates, Inc. Nuclear Equipment Chemical Corp. Owens-Illinois, Inc. Oxford Laboratories Particle Data. Inc. Patentrol Corp. Rohe Scientific Corp. Royco Instruments, Inc. Scientific Products Arthur H. Thomas Co. G. K. Turner Associates United Technical Corp.
DIPOLE MOMENT MEASURING EQUIPMENT Balsbaugh Laboratories, Inc. Kahl Scientific Instrument Corp. Princeton Applied Research Corp. Rutherford Research Products Co.
DISHES — see also glassware, plasticware, ceramicware Bel-Art Products Bellco Glass, Inc.
B/R Glass, Inc. Cal-Glass For Research, Inc. Distillation Engineering Co. F& J Scientific Maurice A. Knight Co. Metex Corp. Podbielniak, Inc. Quartz General Corp. Scientific Development Co. Scientific Glass & Instruments, inc
hydrocarbon Ace Glass, Inc. The Bellacour Co. B/R Glass, Inc. CVC Products. Inc. F& J Scientific A. Gallenkamp and Co. Ltd. Glenco Scientific, Inc. Kontes/Martin. Inc. Lab Glass, Inc. Lab-Line Instruments, Inc Metex Corp. Perkin-Elmer Corp. Phillips Manufacturing Co. Podbielniak, Inc. Precision Distillation Apparatus Co Scientific Glass & Instruments, Inc Stanford Glassblowing Labs., Inc.
molecular Ace Glass, Inc. The Bellacour Co. B/R Glass, Inc. Brinkmann Instruments. Inc. Cal-Glass For Research, Inc. CVC Products, Inc. F& J Scientific Kontes Lab Glass, Inc. Perkin-Elmer Corp. Podbielniak, Inc. Precision Distillation Apparatus Co Scientific Glass & Instruments, Inc
two-stage Amersil, Inc. Cal-Glass For Research, Inc. Corning Glass Works Custom Glassblowing Service F& J Scientific Fischer & Porter Co. Metex Corp. Quartz Sientific, Inc.
vacuum Ace Glass, Inc. The Bellacour Co. B/R Glass, Inc. Cal-Glass For Research. Inc. Chem-Pro Equipment Corp. Custom Glassblowing Service CVC Products, Inc. Distillation Engineering Co. Eck & Krebs, Inc. F& J Scientific FEDESCO A. Gallenkamp and Co. Ltd. Glenco Scientific, Inc.
LABORATORY
GUIDE
DISTILLATION EQUIPMENT ELECTRODES High Vacuum Equipment Corp. Kontes Konîes/Martin, Inc. Lab Glass, fnc. Leybold-Heraeus, Inc. Metex Corp, Metro Scientific, Inc. Microceil Filter, inc. Perkin-Elrner Corp. Podbielniak, Inc. Pope Scientific, Inc. Precision Distillation Apparatus Co. Quartz General Corp. Rinco Instrument Co. Scientific Glass & Instruments, Inc. SGA Scientific Inc. Stanford Glassbiowing Labs., Inc, Tekmar Co. Todd Scientific Co. Tudor Scientific Glass Co.
other
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Automatic Switch Co. B/R Glass, Inc. Cal-Glass For Research, Inc. Custom Glassbiowing Service Distillation Engineering Co. FEDESCO Metex Corp. Owens-Illinois, inc. Per k in - Ε i mer Corp. Scientific Glass & instruments, Inc.
DRY BOXES — see also glove boxes Air Control, Inc. S. Blickman, inc. Controlled Atmosphere, Inc. Curtin Scientific Co. Fisher Scientific Co. A. Galienkamp and Co. Ltd. Hamilton Industries HEMCOCorp. High Vacuum Equipment Corp. Hotpack Corp. Hruden Laboratory Products Instruments For Research & Industry Kewaunee Scientific Equipment Corp. Labco Div. Labconco Corp. Lab Glass, inc. Manostat Corp. Nuclear Equipment Chemical Corp. Raytheon Co., Industrial Electronics Dept. T-M Vacuum Products Co. The Torsion Balance Co. Ultrasonic Instruments International Ltd. Vacuum/Atmospheres Corp.
DRY ICE STORAGE CABINETS — see also refrigerating equipment Andonian Cryogenics. Inc. Bel-Art Products Cincinnati Sub-Zero Products, Inc. Controlled Atmosphere, Inc. Custom Scientific Instruments, Inc. Fisher Scientific Co. Frigitemp Hospital & Laboratory Equipment Corp. Hotpack Corp. Humphreys Corp. Κ. Η. HuppertCo., inc. Lab Glass, Inc. Lab-Line Instruments. Inc Liquid Carbonic Corp. Nalgene Industrial Div. Polyfoam Packers Corp. Pye Unlearn Ltd. Pyles Industries. Inc. Royal Industries, Inc. Thermovac Industries Corp. The VirTIs Co.
DRYERS — see also ovens Paul O. Abbe, Inc. Amsco Industrial Co. Analtech, Inc. Bartlett-Snow Products Bench Scale Equipment Co. Btaw-Knox Food & Chemical Equipment, Inc. S. Blickman» Inc. Blue M Electric Co. Sowen Engineering, inc. Brinkmann instruments, Inc. Chemical & Pharmaceutical Industry Co., Inc. Coast Engineering Laboratory Controlled Atmosphere, Inc. Harry W. Dietert Co.
124 LG AUGUST 1974
Carlo Erba S.p.A. FEDESCO Fisher Scientific Co. Fluid Energy Processing & Equipment Co. Forma Scientific, Inc. A. Galienkamp and Co. Ltd. GCA/Precision Scientific The Grieve Corp. Gruenberg Oven Co., Inc. Harrison Engineering Div. R. J. Harvey Instrument Corp. Hotpack Corp. Hruden Laboratory Products HydorTnermeCorp. Industrial Systems Corp. Jeffrey Manufacturing Co. Lab Glass, Inc. Lab-Line Instruments, Inc Lawler Mfg., Inc. Lectrodryer Lindberg Master Appliance Corp. Metalwash Machinery Corp, Middlesex General Ind. The Patterson-Kelley Co., Inc. Pfaltz & Bauer, Inc. Phase Separations Ltd. Precision Guincy Corp. Shimadzu Seisakusho, Ltd. Stokes Div. The Strong-Scott Mfg. Co. Testing Machines, Inc. ThermolyneCorp. Thermovac Industries Corp. Arthur H. Thomas Co. Vacuum/Atmospheres Corp. The VirTis Co. Edwin L. Wiegand WSF Industries, Inc. Zena Co.
DRYERS, gas AIRCO Industrial Gases Alltech Associates, Inc. Analabs, Inc. Balston, Inc. Barnebey-Cheney Chemetron Corp., Industrial Gases Chemical Research Services, Inc. Coast Engineering Laboratory Controlled Atmosphere, Inc. General Cable Corp. The Grieve Corp. Hruden Laboratory Products Κ. Η. HuppertCo., Inc. industrial Systems Corp. Kahn & Co.. Inc. Kewaunee Scientific Equipment Corp. Lectrodryer Pall Trincor Corp. Pall Trinity Micro Corp. Scientific Gas Products Inc. The Strong-Scott Mfg. Co, Supeico, Inc.
Phase Separations Ltd. Precision Quincy Corp. Scientific Glass & Instruments, Inc. Shimadzu Seisakusho, Ltd. The Strong-Scott Mfg. Co. Thermolyne Corp. Thermovac Industries Corp. Arthur H. Thomas Co. Toyo Kagaku Sangyo Co. Ltd. Vacuum/Atmospheres Corp. TheVirTisCo. Wheaton Scientific Edwin L. Wiegand WSF Industries, Inc.
DUST BELLOWS Gagne Associates, Inc. Wheaton Scientific
DUST BOOTS Bel-Art Products Gagne Associates, Inc. Urtiroyal. Inc.
DUST COVERS Bel-Art Products Gagne Associates, Inc. Professional Tape Co., Inc.
DUST-FREE CABINETS Air Control, inc. S. Blickman, inc. Contamination Control, Inc. Controlled Atmosphere, Inc. Controlled Environment Equipment Corp. ENVIRCO, inc. Forest Scientific, Inc. Ernest F. Fullam, Inc. Hruden Laboratory Products Kaufman Glass Co. Kewaunee Scientific Equipment Corp. Labconco Corp. Liberty Industries, Inc. Merix Chemical Co. Phase Separations LtdPoilutronics; inc. Henry Troemner, Inc. Ultrasonic Instruments international Ltd. United Technical Corp, Vacuum/Atmospheres Corp. WeatherMeasure Corp.
EBULLIOMETERS A. Galienkamp and Co. Lid. Leeds & Northrup Co. Rascher & Betzold, Inc. Scientific Glass & Instruments, Inc. Arthur H. Thomas Co.
DRYING APPARATUS AND ACCESSORIES — see also ovens and air dryers ELECTRICAL & ELECTRONIC WIRE Paul O. Abbe, Inc. HARDWARE Amsco Industrial Co. Baroid Div. BartSett-Snow Products Beckman Instruments, Inc. Bellco Glass, Inc. Bench Scale Equipment Co, Biaw-Knox Food & Chemical Equipment, inc. Blue M Electric Co. Wm. Boekel&Co.. Inc. Bowen Engineering, Inc. Coast Engineering Laboratory Corning Glass Works Dean Products. Inc. Deltech Engineering, Inc. Harry W. Dietert Co. Carlo Erba S.p.A. Fisher Scientific Co. Fluid Energy Processing & Equipment Co. A. Galienkamp and Co. Ltd. GCA/Precision Scientific The Grieve Corp. W. A. Hammond Drierite Co. Hotpack Corp. Hruden Laboratory Products Hydor Therme Corp. Industrial Systems Corp. Kahn & Co., Inc. Lab-Line Instruments, Inc Lawler Mfg., Inc. Lectrodryer Lindberg Maxon Corp, Metalwash Machinery Corp. Pall Trincor Corp. Pall Trinity Micro Corp. Pfaltz & Bauer, Inc.
Aicolac, Inc. DATAcap, Inc. High Voltage Engineering Corp. TA Mfg. Corp. WSF industries. Inc.
ELECTRICAL TESTING EQUIPMENT — see also ammeters, voltmeters, conductivity equipment, oscilloscopes, etc. Amprobe Instrument R. 8. Annis Co. Beckman Instruments, Inc. James G. Biddle Co. Central Scientific Co. Control Equipment Corp, Curtin Scientific Co. DATAcap, Inc. Datapulse Ducon Instruments, Inc. E. I. du Pont de Nemours &Co., Inc. Dynamic Data Corp. Dynascan Corp. The Ealing Corp. Electro Scientific Industries, inc. Elgar Corp, Epic, Inc. Gencom Div. General Electric Co. General Radio Co.
Gould, Inc., Instrument Systems Div. Heath/Schlumberger Instruments Hewlett-Packard Co., (Calif.) The Hickok Electrical instrument Co. High Voitage Engineering Corp. Keithley Instruments, inc. Lab-Line Instruments, inc Leeds & Northrup Co. The London Co. Monsanto Co. Newport Labs., Inc. Non-Linear Systems, Inc. Philips Electronic Instruments, Inc. Princeton Applied Research Corp. Pye Unicam Ltd. RCA Electronic Components RFL Industries, inc. Rohde & Schwarz Sales Co. {USA) Inc. Rustrak Instrument Div. Rutherford Research Products Co. Sargant-Welcn Scientific Co. Shimadzu Seisakusho, Ltd. Simpson Electric Co. Special Instruments & Machinery Co. Star-Tronics Sunshine scientific Tarn-Sames Tektronix, Inc. Texscan Corp. Trio Laboratories, Inc. Tnpiett Corp. Vari-Tech Co. Veionex Victory Engineering Corp. Weston Instruments, Inc.
ELECTRODES dropping mercury Brinkmann Instruments, Inc. Princeton Applied Research Corp. Scientific Glass & Instruments. Inc.
glassy carbon Brinkmann Instruments, Inc. Chemtrix, Inc. Princeton Applied Research Corp.
graphite Airco, inc. Angstrom, Inc. Atonwgic Chemetals Co. Baird-Atomic, Inc. Brinkmann Instruments, Inc. The Carborundum Co., Graphite Products Div. (N.Y.) Chemtrix, inc. Fisher Scientific Co. Met-Bay, inc. National Spectrographic Laboratories, Inc. Pacific Engineering & Production Co. of Nevada Poco Graphite, Inc. Princeton Applied Research Corp, Spectro Products, Inc. Spex Industries, Inc. Ultra Carbon Corp. Union Carbide Corp., Carbon Products Div. Waie Apparatus Co. Zeebac Inc.
Karl Fischer Analytical Measurements, Inc. Brinkmann Instruments, Inc. Corning Glass Works Corning Scientific Instruments Fisher Scientific Co. Kernco Instruments, inc. The London Co. Lu ft instruments, Inc. Scientific Glass & instruments, inc.
metallic Analytical Measurements, Inc. Atomergic Chemetals Co. Autoclave Engineers, Inc. Beckman instruments, Inc. Brinkmann Instruments, Inc. Chemtrix, Inc. Corning Glass Works Corning Scientific Instruments Engelhard Minerals & Chemicals Corp., Engelhard Industries Div. Fisher Scientific Co. Harvard Apparatus Co., Inc. International Biophysics Corp. Ionics, Inc. Jarrell-Ash Div. The London Co.
LABORATORY
GUIDE
ELECTRODES, metallic ELECTRON SPIN RESONANCE EQUIPMENT Markson Science, Inc. Materials Research Corp. Matthey Bishop, Inc. Micro-Sensors, Inc. National Spectrograph^ Laboratories, , Inc. Pacific Engineering & Production Co. of Nevada Pen Kem Co. Princeton Applied Research Corp. Pye Unicam Ltd. Arthur H. Thomas Co. Zeebac Inc.
Photovolt Corp. Prolabo Pye Unicam Ltd. Sargent-Welch Scientific Co. Arthur H. Thomas Co. Transidyne General Corp. Tri-R Instruments, Inc. Universal Interloc, Inc. Utopia Instrument Co. WeatherMeasure Corp.
ELECTRODES, pH
Analytical Measurements, Inc. Aquatronics, Inc. Beckman Instruments, Inc. Betz Laboratories, Inc. Brinkmann Instruments, Inc. Broadley-James Corp. Chemapec, Inc. Chemtrix, Inc. Coleman Instruments Corning Glass Works Corning Scientific Instruments Adam David Co. Delta Scientific Corp. F& J Scientific Fisher Scientific Co. The Foxboro Co. Great Lakes Instruments, Inc. Instrumentation Laboratory Inc. Internationa) Crystal Laboratories Intertech Corp. Kent Cambridge Instrument Co. Kernco Instruments, Inc. Kontes/Martin, Inc. Kruger & Eckels, Inc. LaMotte Chemical Products Co. Leeds & Northrup Co. The London Co. Markson Science, Inc. Microelectrodes, Inc. Micro-Sensors, Inc. L.G. Nester Co. New Brunswick Scientific Co., Inc. Photovolt Corp. Prolabo Pye Unicam Ltd. Sargent-Welch Scientific Co. Scientific Glass & Instruments, Inc. Shimadzu Seisakusho, Ltd. Arthur H. Thomas Co. Tri-R Instruments, Inc. Universal Interloc, Inc. Utopia Instrument Co.
combination
2 c
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1 φ
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Amstro Corp. Analytical Measurements, Inc. Aquatronics, Inc. Beckman Instruments, Inc. Brjnkmann Instruments, Inc. Broadley-James Corp. Chemapec, Inc. Chemtrix, Inc. Coleman Instruments Corning Glass Works Corning Scientific Instruments Adam David Co. Delta Scientific Corp. Fisher Scientific Co. Great Lakes Instruments, Inc. Hach Chemical Co. Heath/Schlumberger Instruments Honeywell, Inc.. Process Control Div. Instrumentation Laboratory Inc. International Biophysics Corp. International Crystal Laboratories InterOcean Systems, Inc. Kent Cambridge Instrument Co. Kernco Instruments, Inc. Kruger & Eckels, Inc. LaMotte Chemical Products Co. Leeds & Northrup Co. The London Co. Markson Science, Inc. Microelectrodes, Inc. Micro-Sensors, Inc. L. G. Nester Co. New Brunswick Scientific Co., Inc. Orion Research Inc. Photovolt Corp. Pye Unicam Ltd. Sargent-Welch Scientific Co. Arthur H. Thomas Co. Transidyne General Corp. Tri-R Instruments, Inc. Universal Interloc, Inc. Utopia Instrument Co. WeatherMeasure Corp.
general purpose Analytical Measurements, Inc. Aquatronics, Inc. Beckman Instruments, Inc. Betz Laboratories, Inc. Brinkmann Instruments, Inc. Broadley-James Corp. Chemapec, Inc. Chemtrix, Inc.
See the MARKSON pH electrode a d on page 2 0 3 Coleman Instruments Corning Glass Works Corning Scientific Instruments Adam David Co. Delta Scientific Corp. F & J Scientific Fisher Scientific Co. Great Lakes Instruments, Inc. Heath/Schlumberger Instruments Instrumentation Laboratory Inc. International Crystal Laboratories Intertech Corp. Kent Cambridge Instrument Co. Kernco Instruments, Inc. Koslow Scientific Co. Kruger & Eckels, Inc. LaMotte Chemical Products Co. Leeds & Northrup Co. The London Co. Markson Science, Inc. Microelectrodes, Inc. Micro-Sensors, Inc. L. G. Nester Co. New Brunswick Scientific Co., Inc. Orion Research Inc.
126 LG AUGUST 1974
glass
Adam David Co. F & J Scientific Fisher Scientific Co. The Foxboro Co. International Crystal Laboratories Kernco Instruments, Inc. Koslow Scientific Co. LaPine Scientific Co. Leeds & Northrup Co. The London Co. Markson Science, Inc. Micro-Sensors, Inc. Photovolt Corp. Sargent-Welch Scientific Co. Scientific Glass & Instruments, Inc. Shimadzu Seisakusho, Ltd. Arthur H. Thomas Co.
ELECTRODES, specific ion Analytical Measurements, Inc. Beckman Instruments, Inc. Betz Laboratories, Inc. Brinkmann Instruments, Inc. Chemtrix, Inc. Corning Glass Works Corning Scientific Instruments Delta Scientific Corp. F& J Scientific Fisher Scientific Co. The Foxboro Co. Great Lakes Instruments, Inc. Honeywell, Inc., Process Control Div. International Crystal Laboratories Kent Cambridge Instrument Co. Kernco Instruments, Inc. Leeds & Northrup Co. The London Co. Markson Science, Inc. Materials Research Corp. Microelectrodes, Inc. Micro-Sensors, Inc. National Instrument Laboratories, Inc. Orion Research Inc. Photovolt Corp. Pye Unicam Ltd. Royco Instruments, Inc. Arthur H. Thomas Co. Universal Interloc, Inc. Utopia Instrument Co. WeatherMeasure Corp.
Analytical Measurements. Inc. Beckman Instruments, Inc. Brinkmann Instruments, Inc. Broadley-James Corp. Chemtrix, Inc. Coleman Instruments Corning Glass Works Corning Scientific Instruments
The Ealing Corp. Eriez Magnetics S.G. FrantzCo., Inc. Gencom Div. James Electronics, Inc. Kontes/Martin, Inc. Nuclide Corp. Process & Instruments Corp. Sargent-Welch Scientific Co. Spectromagnetic Industries Sunshine Scientific Varian Instrument Div. Walker Scientific, Inc.
ELECTROMETER CALIBRATION UNIT Corning Glass Works Corning Scientific Instruments Keithley Instruments, Inc. Nuclide Corp. Research Assistants Corp. Rutherford Research Products Co.
ELECTRON GUNS
ELECTROLYSIS APPARATUS The Bellacour Co. Bico, Inc. Camag, Inc. Carlo Ërba S.p. A. A. Gallenkamp and Co. Ltd. Ionics, Inc.
ELECTRON PARAMAGNETIC RESONANCE EQUIPMENT
Biomed Instruments, Inc.
titration
See the VARIAN laboratory electromagnets ad on page 19
Advanced Metals Research Corp. Airco. Inc. Airco Temescal Balzers High Vacuum Corp. Coates & Welter Instrument Corp D & W Industries. Inc. Denton Vacuum, Inc. The Ealing Corp. Energy Sciences, Inc. ILC Technology Japan Spectroscopic Co., Ltd. Materials Research Corp. Nuclide Corp. Nuclide Corp., AGV Div. Perkin-Elmer Ultek, Inc. Physical Electronics Industries, Inc. Shimadzu Seisakusho, Ltd. Sloan Technology Corp. Tam-Sames Technics, Inc. Thermionics Laboratory, Inc. Varian Vacuum Div. Westinghouse Electric Corp.
ELECTRODIALYZERS
reference Analytical Measurements, Inc. Aquatronics, Inc. Beckman Instruments, Inc. Betz Laboratories, Inc. Brinkmann Instruments, Inc. Broadley-James Corp. Chemapec, Inc. Chemtrix, Inc. Coleman Instruments Corning Glass Works Corning Scientific Instruments Adam David Co. Delta Scientific Corp. F & J Scientific Fisher Scientific Co. The Foxboro Co. Great Lakes Instruments, Inc. Instrumentation Laboratory Inc. International Crystal Laboratories Intertech Corp. Kent Cambridge Instrument Co. Kernco Instruments, Inc. Koslow Scientific Co. Kruger & Eckels, Inc. Leeds & Northrup Co. The London Co. Markson Science, Inc. Microelectrodes, Inc. Micro-Sensors, Inc. L. G. Nester Co. Orion Research Inc. Photovolt Corp. Princeton Applied Research Corp. Pye Unicam Ltd. Sargent-Welch Scientific Co. Arthur H. Thomas Co. Transidyne General Corp. Tri-R Instruments, Inc. Universal Interloc, Inc. Utopia Instrument Co.
Andonian Cryogenics, Inc. R. B. AnnisCo. Biotronex Lab., Inc. Bruker-Magnetics. Inc. Bruker Scientific, Inc. Central Scientific Co. The Cyclotron Corp. Durrum Instrument Corp.
ELECTROFOCUSING APPARATUS AND SUPPLIES Biomed Instruments, Inc. E-C Apparatus Corp. Hoefer Scientific Instruments Instrumentation Specialities Co. LKB Instruments, Inc. ORTEC Incorporated
See the SARGENT-WELCH electrolytic analyzers ad on page 81 McKee-Pedersen Instruments M-T Electronics, Inc. Pacific Engineering & Production Co. of Nevada Princeton Applied Research Corp. Process Analyzers. Inc. (Tex.) Prolabo Sargent-Welch Scientific Co. Shimadzu Seisakusho, Ltd. Zena Co.
ELECTROMAGNETS — see also magnets Allen-Bradley Co. Alpha Scientific, Inc.
Andonian Cryogenics, Inc. Digilab, Inc. Ducon Instruments, Inc. International Pammcorp James Electronics, Inc. JEOL Analytical Instruments, Inc. Kontes Materials Research Corp. Micro-Now Instrument Co. Scientific Resources, Inc. Tracor Northern, Inc. Varian Instrument Div. Wilmad Glass Co., Inc.
ELECTRON SPIN RESONANCE EQUIPMENT Amersil, Inc. Andonian Cryogenics, Inc. Digilab, Inc. Ducon Instruments, Inc. The Ealing Corp. International Pammcorp JEOL Analytical Instruments, Inc. Kontes
LABORATORV
GUIDE
ELECTRON SPIN RESONANCE EQUIPMENT ELECTROSCOPES Micro-Now Instrument Co. Schoeffel Instrument Corp. Scientific Resources, Inc. Stonier Isotope Chemicals, Inc. Tracor Northern, Inc. Varian Instrument Div. Wilmad Glass Co., Inc.
ELECTRONIC CONTROLS AND COMPONENTS
D C Φ
Ε
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3
σ
LU Ό C (0
Β c Φ
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to
AEL, Inc. Allen-Bradley Co. Alnor Instrument Co. AMP Special Industries Analog Devices, Inc. Astrosystems, Inc. Atlantic Research Corp. Automatic Switch Co. Β & Β Motor & Control Corp. Barber-Colman Co. Beckman Instruments, Inc. Bell & Howell Bristol Div. of Ά ceo B/W Controls Inc. Conrac Corp., Cramer Div. Control Equipment Corp. Corning Glass Works Curtiss Engineering & Research G. W. DahlCo., Inc. Data Graphics Corp. Dynage, Inc. Dynamic Data Corp. Eagle-Picher Industries, Inc. Electro Scientific Industries, Inc. Fischer & Porter Co. The Foxboro Co. Gelman Instrument Co. General Devices, Inc. General Electric Co. General Electric Co., Nuclear Power Generation Control Dept. General Radio Co. Gulton Industries, Inc. The Hays Corp. G. K. Heller Corp. Honeywell, Inc., Aerospace & Defense Group Honeywell, Inc., Process Control Div. Honeywell, Inc., Residential Div. Κ. Η. Huppert Co., Inc. ITT Barton James Electronics, Inc. Keltron Corp. Leeds & Northrup Co. Leslie Co. LFECorp. Lindberg Luft Instruments, Inc. Lumenite Electronic Corp. Martin-Decker Co. Non-Linear Systems, Inc. Nuclear Research Corp. Payne Engineering Co. Power Control Corp. Precision Forming & Stamping Co. Precision Products Div. Presin Co., Inc. Raytheon Semiconductor Research, Inc. RFL Industries, Inc. Spectromagnetic Industries Star-Tronics Sunshine Scientific The Superior Electric Co. Telmar, Inc. Thermo Electric Co., Inc. Theta Instrument Corp. United Electric Controls Co. United Mineral & Chemical Corp. Valley Forge Instrument Co., Inc. Veeder-Root Victory Engineering Corp.
ELECTROPHORESIS, cellulose Babcock & Wilcox Co., Automated Machine Div. Bailey Meter Co. Clifford Instruments, Inc. Corning Glass Works E-C Apparatus Corp. Gelman Instrument Co. Helena Laboratories Instrumentation Laboratory Inc. LKB Instruments, Inc. Millipore Corp.
ELECTROPHORESIS, liquid Grand Island Biological Co. LKB Instruments, Inc. Pen Kern Co. Zena Co.
ELECTROPHORESIS, PAPER electrophoresis densitometers
ELECTROPHORESIS, thin layer
Camag, Inc. Clifford Instruments, Inc. Corning Scientific Instruments E-C Apparatus Corp. Gelman Instrument Co. Helena Laboratories Instrumentation Laboratory Inc. Joyce, Loebl & Co. Millipore Corp. Transidyne General Corp. Carl Zeiss, Inc.
Analtech, Inc. Brinkmann Instruments, Inc. Camag. Inc. E-C Apparatus Corp. Gelman Instrument Co. Instrumentation Laboratory Inc. LKB Instruments, Inc. Savant Instruments, Inc. Shandon Southern Instruments, Inc.
electrophoresis, continuous flowing
ELECTROPHORESIS APPARATUS
Polysciences, Inc.
continuous
electrophoresis, density gradient
ABBOTT, Scientific Products Div.
See the GELMAN INSTRUMENT electrophoresis equipment 193
E-C Apparatus Corp. Polysciences, Inc.
electrophoresis, immuno Biomed Instruments, Inc. Buchler Instruments Camag, Inc. Corning Scientific Instruments Dade Div. E-C Apparatus Corp Helena Laboratories Instrumentation Laboratory Inc. LKB Instruments, Inc. Millipore Corp. Shandon Southern Instruments, Inc.
electrophoresis, high voltage Camag, Inc. E-C Apparatus Corp. Gelman Instrument Co. Gilson Medical Electronics, Inc. Polysciences, Inc. Savant Instruments, Inc. Shandon Southern Instruments, Inc.
electrophoresis, low voltage Analtech, Inc. Buchler Instruments Camag, Inc. Corning Scientific Instruments E-C Apparatus Corp. Gelman Instrument Co. Helena Laboratories Instrumentation Laboratory Inc. LKB Instruments, Inc. Savant Instruments, Inc. Shandon Southern Instruments, Inc.
electrophoresis, paper disk E-C Apparatus Corp. Instrumentation Laboratory Inc. Pallflex Products Corp. H. Reeve Angel & Co., Inc. Shandon Southern Instruments, Inc.
electrophoresis, paper scanners Biomed Instruments, Inc. Camag, Inc. Clifford Instruments, Inc. E-C Apparatus Corp. Joyce, Loebl & Co. Carl Zeiss, Inc.
ELECTROPHORESIS, starch Buchler Instruments E-C Apparatus Corp, Gelman Instrument Co. LKB Instruments, Inc. MC/B Manufacturing Chemists Shandon Southern Instruments, Inc.
ELECTROPHORESIS, starch block Buchler Instruments E-C Apparatus Corp.
128 LG AUGUST 1974
Gelman Instrument Co. Instrumentation Laboratory Inc. Shandon Southern Instruments, Inc.
Camag, Inc. Pen Kem Co. Polysciences, Inc.
gel, preparative Aardvark Instruments, Inc. Biomed Instruments, Inc. Buchler Instruments Canalco, Inc. Corning Scientific Instruments E-C Apparatus Corp. Gelman Instrument Co. Hoefer Scientific Instruments Instrumentation Laboratory Inc. Isolab, Inc. Pharmacia Fine Chemicals, Inc. Polysciences, Inc. Savant Instruments, Inc. Shandon Southern Instruments, Inc. Tri-R Instruments, Inc.
starch gel Biomed Instruments, Inc. Buchler Instruments E-C Apparatus Corp. Gelman Instrument Co. Instrumentation Laboratory Inc. LKB Instruments, Inc. Savant Instruments, Inc. Shandon Southern Instruments, Inc.
vertical gel Aardvark Instruments, Inc. Biomed Instruments, Inc. Bio-Rad Laboratories Buchler Instruments Canalco, Inc. E-C Apparatus Corp. Glenco Scientific, Inc. Hoefer Scientific Instruments Isolab, Inc. Klett Manufacturing Co., Inc. Pharmacia Fine Chemicals, Inc. Polysciences, Inc. Shandon Southern Instruments, Inc.
forced-flow Canalco, Inc.
'free' micro Pen Kem Co.
gel Aardvark Instruments, Inc. Biomed Instruments, Inc. Bio-Rad Laboratories Buchler Instruments Canalco, Inc. Corning Glass Works Corning Scientific Instruments Dade Div. E-C Apparatus Corp. Gelman Instrument Co. Glenco Scientific, Inc. Hoefer Scientific Instruments Instrumentation Laboratory Inc. Isolab, Inc. Joyce, Loebl & Co. LKB Instruments, Inc. Millipore Corp. Pharmacia Fine Chemicals, Inc. Polysciences, Inc. Savant Instruments, Inc. Shandon Southern Instruments, Inc. G. K. Turner Associates
gel, acrylamide Aardvark Instruments, Inc. Analtech, Inc. Biomed Instruments, Inc. Bio-Rad Laboratories Buchler Instruments Canalco, Inc. E-C Apparatus Corp. Electrothermal Ltd. Gilson Medical Electronics, Inc. Glenco Scientific, Inc. Hoefer Scientific Instruments Instrumentation Laboratory Inc. Isolab, Inc. Joyce, Loebl & Co. LKB Instruments, Inc. ORTEC Incorporated Pharmacia Fine Chemicals, Inc. Polysciences, Inc. Savant Instruments, Inc. Shandon Southern Instruments, Inc. Tri-R Instruments, Inc.
ELECTROPHORESIS DESTAINING EQUIPMENT Bio-Rad Laboratories Canalco. Inc. E-C Apparatus Corp. Electrothermal Ltd. Hoefer Scientific Instruments Isolab, Inc. Pharmacia Fine Chemicals, Inc. Polysciences, Inc. Savant Instruments, Inc. Shandon Southern Instruments, Inc.
ELECTROPHORESIS EQUIPMENT AND ACCESSORIES Aardvark Instruments, Inc. ABBOTT, Scientific Products Div. Analtech, Inc. Atago Optical Works Co., Ltd. Bausch & Lomb, SOPD Div. Biomed Instruments, Inc. Bio-Rad Laboratories Brinkmann Instruments, Inc. Buchler Instruments Camag, Inc. Canalco, Inc. Corning Glass Works Corning Scientific Instruments E-C Apparatus Corp. Electrothermal Ltd. Gelman Instrument Co. Gilford Instrument Labs., Inc. Helena Laboratories Hoefer Scientific Instruments Instrumentation Laboratory Inc. Isolab, Inc. Joyce, Loebl & Co. LKB Instruments, Inc. Millipore Corp. ORTEC Incorporated Pen Kem Co. Pharmacia Fine Chemicals, Inc. Polysciences, Inc. Shandon Southern Instruments, Inc. Tri-R Instruments, Inc. G. K. Turner Associates Ultra-Violet Products, Inc. Wilson Diagnostics, Inc. Zena Co. Zeta-Meter. Inc.
ELECTROSCOPES The Ealing Corp, Sargent-Welch Scientific Co.
LABORATORY
GUIDE
ELLIPSOMETERS FILTERING E Q U I P M E N T A N D A I D S ELLIPSOMETERS Gaertner Scientific Corp. Rudolph Instruments Rudolph Research
EQUILIBRIUM DIALYSIS SYSTEM Atcolac, Inc. Biomed Instruments, Inc. Kontron Inc.
EQUIPMENT, leasing and renting
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Alden Electronic & Impulse Recording Equipment Co., Inc. Bausch & Lomb, Inc., Analytical Systems Div. Esterline Angus Gencom Div. General Electric Co., Analytical Measurements Jarrell-Ash Div. Kaman Sciences Corp. Laboratory Instrument Exchange, Inc. Laser Technology, Inc. Philips Electronic Instruments, Inc. Pro-Tech, Inc. Science Spectrum, Inc. Scientific Leasing Inc. Scientific Products Scientific Products, Inc. Sunshine Scientific Technics, Inc. Tektronix, Inc. Telco Leasing, Inc. Tronac, Inc. Varian Instrument Div. Varian Techtron WeatherMeasure Corp.
EVAPORATORS Ace Glass, Inc. AircoTemescal Alltech Associates, Inc. Balzers High Vacuum Corp. Blaw-Knox Food & Chemical Equipment, Inc. Brinkmann Instruments, Inc. The Carborundum Co., Graphite Products Div. (Ohio) Cooke Vacuum Products, Inc. Dean Products, inc. The De Laval Separator Co. Denton Vacuum, Inc. Edwards High Vacuum, Inc. FEDESCO GCA/Precision Scientific GCA/Vacuum Industries Heil Process Equipment Corp. High Vacuum Equipment Corp. Kahl Scientific Instrument Corp. Kensington Scientific Corp. Kontes Lab-Line Instruments, Inc Leybold-Heraeus, Inc. Materials Research Corp. Middlesex General Ind. Organomation Associates, Inc. Perkin-Elmer Ultek, Inc. Precision Forming & Stamping Co. Quartz General Corp. Quickfit Radiation Facilities, Inc. Rinco Instrument Co. Scientific Glass & Instruments, Inc. Scientific Manufacturing Industries SGA Scientific Inc. Thermionics Laboratory, Inc. Thermovac Industries Corp. Arthur H. Thomas Co. T-M Vacuum Products Co. Varian Vacuum Div. Wallace & Tiernan WSF Industries, Inc.
EVAPORATORS, flash Ace Glass, Inc. Balzers High Vacuum Corp. Blaw-Knox Food & Chemical Equipment, Inc. Brinkmann Instruments, Inc. Buchler Instruments Dean Products, Inc. The De Laval Separator Co. GCA/Precision Scientific High Vacuum Equipment Corp. Kensington Scientific Corp. Lab-Line Instruments, Inc Precision Distillation Apparatus Co. Rinco Instrument Co.
130 LG AUGUST 1974
See the BRINKMANN INSTRUMENT rotavapors ad on page 1 Scientific Glass & Instruments, Inc. Scientific Manufacturing Industries Thermovac Industries Corp. Arthur H. Thomas Co.
EVAPORATORS, rotary film Ace Glass, Inc. Blaw-Knox Food & Chemical Equipment, Inc. Brinkmann Instruments, Inc. Buchler Instruments CVC Products, Inc. The De Laval Separator Co. A. Gallenkamp and Co. Ltd. GCA/Precision Scientific High Vacuum Equipment Corp. Kensington Scientific Corp. Lab-Line Instruments, Inc PolyScience Corp. Prolabo Quartz General Corp. Rinco Instrument Co. Scientific Glass & Instruments, Inc. Scientific Manufacturing Industries Tekmar Co. Tri-R Instruments, Inc.
EXTRACTION APPARATUS AND ACCESSORIES Ace Glass, Inc. Baker Perkins, Inc. Bench Scale Equipment Co. Bico, Inc. Wm. Boekel & Co., Inc. B/R Glass, Inc. Brinkmann Instruments, Inc. Fred S. Carver Inc. Chem-Pro Equipment Corp. Corning Glass Works Electrothermal Ltd. FEDESCO Fischer & Porter Co. Fisher Scientific Co. A. Gallenkamp and Co. Ltd. GCA/Precision Scientific Glenco Scientific, Inc. Kensington Scientific Corp. Kontes Kontes/Martin, Inc. Labconco Corp. Lab Glass, Inc. Lab-Line Instruments, Inc Metro Scientific, Inc. Norton Co. (Mass) Owens-Illinois, Inc. Pierce Chemical Co. Pittsburgh Activated Carbon Div. Pope Scientific, Inc. Precision Distillation Apparatus Co. Precision Forming & Stamping Co. Quartz General Corp. Quickfit H. Reeve Angel & Co., Inc. Sargent-Welch Scientific Co. Scientific Glass & Instruments, Inc. SGA Scientific Inc. Arthur H. Thomas Co. Tudor Scientific Glass Co. Wheaton Scientific
FANS FOR LABORATORY USE Carpart Corp. Dynalab Corp. Heat Systems-Ultrasonics, Inc. Heil Process Equipment Corp. Kewaunee Scientific Equipment Corp. Labconco Corp. McLean Engineering Labs. Nalge Co. Nalgene Industrial Div. The New York Blower Co. Perimair Co. Tri-Mer Corp. United Technical Corp.
FERMENTATION EQUIPMENT Bellco Glass, Inc. Bench Scale Equipment Co.
Chemapec, Inc. Fermentation Design, Inc. A. Gallenkamp and Co. Ltd. Kaufman Glass Co. Lab Glass, Inc. Lab-Line Instruments, Inc New Brunswick Scientific Co., Inc. Scientific Industries, Inc. Scientific Products Teknika, Inc. The VirTisCo. WSF Industries, Inc.
FIBERS, ceramic Aremco Products, Inc. Atomergic Chemetals Co. Babcock & Wilcock Co., Refractories Div. Bjorksten Research Labs., Inc. The Carborundum Co., Refractories & Electronics Div. Cerac, Inc. General Technologies Corp. Kaufman Glass Co.
FILLING AND DISPENSING EQUIPMENT Ace Glass, Inc. Bel-Art Products Bellco Glass, Inc. Β I F
BioQuest Chase-Logeman Corp. Chemical & Pharmaceutical Industry Co., Inc. Cole-Parmer Instrument Co. Gilson Medical Electronics, Inc. Glenco Scientific, Inc. Godax Laboratories Hamilton Co. Hardman-Triplematic Div. Headway Research, Inc. Hruden Laboratory Products Kontes/Martin, Inc. Kraft Apparatus, Inc. Labconco Corp. Labindustries Manostat Corp. Maurukas Co., Inc. Microcell Filter, Inc. Micromedic Systems, Inc. Milton Roy Co. MISCO Scientific National Instrument Co., Inc. National Spectrographs Laboratories, Inc. Owens-Illinois, Inc. Oxford Laboratories Polytechnical Products Co. Princeton Fluidics Corp. Pyles Industries, Inc. Quickfit Rohe Scientific Corp. Schwarz/Mann Scientific Glass & Instruments, Inc. SGA Scientific Inc. Southern Cross Manufacturing Corp. Technilab Instruments, Inc. Arthur H. Thomas Co. Trace Metals Instruments, Inc. United Technical Corp. Wheaton Scientific
FILM oscillographic Bell & Howell Eastman Kodak Co. GAF Corp., Industrial Photo Div. Polaroid Corp.
photographic E. I. du Pont de Nemours & Co., Inc. Eastman Kodak Co. GAF Corp., Chemical Div. GAF Corp., Industrial Photo Div. Kalvar Corp. Polaroid Corp. Polysciences, Inc. Zena Co.
spectrographic Angstrom, Inc. Applied Research Labs. Eastman Kodak Co. Jarrell-Ash Div. National Spectrographic Laboratories, Inc. Polysciences, Inc.
Spex Industries, Inc. Zeebac Inc.
x-ray Blake Industries, Inc. Cenco X-Ray Co. CGR Medical Corp. E. I. du Pont de Nemours & Co., Inc. Eastman Kodak Co. Enraf-Nonius, Inc. GAF Corp., Chemical Div. GAF Corp., Industrial Photo Div. Philips Electronic Instruments, Inc. Polaroid Corp. Rigaku/USA
other Analog Devices, Inc. Chemplex Industries, Inc. E. I. du Pont de Nemours & Co., Inc. Kinemetrics, Inc. Polaroid Corp. Polysciences, Inc.
FILTER PAPERS ABBOTT, Scientific Products Div. Ace Glass, Inc. Atomic Products Corp. Baroid Div. Bico,Inc. Chemplast, Inc. Curtin Scientific Co. Ertel Engineering Co. Fisher Scientific Co. Gelman Instrument Co. ICN Isotope & Nuclear Div. MISCO Scientific Nuclepore Corp. Pall Trincor Corp. H. Reeve Angel & Co., Inc. Research Appliance Co. Schleicher & Schuell, Inc. Schuco Scientific Glass & Instruments, Inc. SERFILCO Soltec Corp. The Staplex Co. Terriss-Consolidated Industries Arthur H. Thomas Co. Toyo Kagaku Sangyo Co. Ltd. Utopia Instrument Co. WeatherMeasure Corp. Wilson Diagnostics, Inc.
FILTER POWDER ABBOTT, Scientific Products Div. Bio-Rad Laboratories Corning Glass Works Johns-Manville H. Reeve Angel & Co., Inc. Schleicher & Schuell, Inc. SERFILCO
FILTER PRESSES AMF Cuno Div. Baroid Div. Fred S. Carver Inc. Chemapec, Inc. The Duriron Co., Inc. Ertel Engineering Co. Olson Laboratories, Inc. T. Shriver & Co., Inc. Star Tank & Filter Corp. Terriss-Consolidated Industries Toyo Kagaku Sangyo Co. Ltd.
FILTER PULP Wm. Boekel &Co., Inc. The Duriron Co.. Inc. H. Reeve Angel & Co., Inc. Schleicher & Schuell, inc. Toyo Kagaku Sangyo Co. Ltd.
FILTERING EQUIPMENT AND AIDS — see also tunnels, filter Alsop Engineering Corp. AMF Cuno Div. Amicon Corp. Atlantic Research Corp. Balston, Inc. Bamebey-Cheney Barnstead Co. Bel-Art Products Belleville Wire Cloth Co., Inc.
LABORATORY
GUIDE
FILTERING EQUIPMENT AND AIDS FILTERS, metallic
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BioQuest Brunswick Corp. The Carborundum Co., Commercial Filters Div. Chemapec, Inc. Circle Seal Corp. Coast Engineering Laboratory Coors Porcelain Co. Corning Glass Works The De Laval Separator Co. Dettech Engineering, Inc. The Duriron Co., Inc. Eagle-Picher Industries, Inc. Ertel Engineering Co. Farr Co. Filterchem Corp. Filterite Corp. Fisher Scientific Co. The Fluorocarbon Co. GAF Corp., Chemical Div. Gelman Instrument Co. Heico, Inc. Hoefer Scientific Instruments Hruden Laboratory Products Ion Exchange Products, Inc. Johns-Manville Maurice A. Knight Co. L'A/Water Treatment Lab Glass, Inc. MikroPul Div. Franklin Miller, Inc. Millipore Corp. Nalge Co. New York Laboratory Supply Co., Inc. Norton Co. (Mass) Osmonics, Inc. Owens-Illinois, Inc. Pall Trincor Corp. Pall Trinity Micro Corp. PolyScience Corp. Precision Gas Products, Inc. H. Reeve Angel & Co., Inc. Schleicher & Schuell, Inc. Scientific Glass & Instruments, Inc. Scientific Specialties Service, Inc. Selas Flotronics The Sel-Ftex Co. SERFILCO Sethco Manufacturing Corp. T. Shriver & Co., Inc. Arthur H. Thomas Co. Toyo Kagaku Sangyo Co. Ltd. WeatherMeasure Corp. Wire Cloth Manufacturers, Inc.
C (Ο
FILTERS
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Balston, Inc. Brunswick Corp. The Duriron Co., Inc. Filterchem Corp. Filterite Corp. Gelman Instrument Co. Heil Process Equipment Corp. Hruden Laboratory Products Liquidyne Corp. H. Reeve Angel & Co., Inc. Selas Flotronics SERFILCO Sethco Manufacturing Corp. Vanton Pump & Equipment Corp.
air sampling Ace Glass, Inc. Associated Electrical Industries International Ltd. Atomic Products Corp. Baird-Atomic, Inc. Balston, Inc. Barnebey-Cheney BGI, Inc. Brunswick Corp. Cambridge Filter Corp. Condyne Instruments Curtin Scientific Co. Fisher Scientific Co. Galileo Electro-Optics Corp. Gelman Instrument Co. Hoke Incorporated Hruden Laboratory Products ICN Isotope & Nuclear Div. Intertech Corp. Ion Exchange Products, Inc. Kontes Lockwood and McLorie Inc. Microcell Filter, Inc. Millipore Corp. Mine Safety Appliances Co. MISCO Scientific Monsanto Co. National Environmental Instruments Inc. National Spectrographic Laboratories, Inc. Nuclear Equipment Chemical Corp. Nuclepore Corp. Pall Trincor Corp. Pallflex Products Corp.
132 LG AUGUST 1974
Poco Graphite, Inc. H. Reeve Angel & Co., Inc. Research Appliance Co. Research Products Corp. Schleicher & Schuetl, Inc. Scientific Glass & Instruments, Inc. Selas Flotronics SERFILCO Sethco Manufacturing Corp. Sherwood Medical Industries, Inc. TheStaplexCo. Arthur H. Thomas Co. WeatherMeasure Corp.
analog A. P. Circuit Corp. Burr Brown Research Corp. Hewlett-Packard Co., (Calif.) Ithaco, Inc. Nuclide Corp. Spectrum Instruments, Inc. Teledyne Philbrick
asbestos sheets Alsop Engineering Corp. AMFCuno Div. Cambridge Filter Corp. Ertel Engineering Co. Gelman Instrument Co. Johns-Manville Kaufman Glass Co. Liquidyne Corp. Nuclepore Corp. Arthur H. Thomas Co. Toyo Kagaku Sangyo Co. Ltd.
audio A. P. Circuit Corp. General Radio Co. Hewlett-Packard Co., (Calif.) Ithaco, Inc. Rohde & Schwarz Sales Co. (USA) Inc. Spectrum Instruments. Inc.
bacteriological Alsop Engineering Corp. American Air Filter Co., Inc. Amicon Corp. Atlantic Ultraviolet Corp. Balston, Inc. Biomed Instruments, Inc. S. Blickman, Inc. Cambridge Filter Corp. Ertel Engineering Co. Extracorporeal Medical Specialties, Inc. Fermentation Design, Inc. Filterite Corp. Fisher Scientific Co. Galileo Electro-Optics Corp. A. Gallenkamp and Co. Ltd. Gelman Instrument Co. Helena Laboratories HEMCOCorp. Hruden Laboratory Products Ion Exchange Products, Inc. Ionics, Inc. Liquidyne Corp. Microcell Filter, Inc. Millipore Corp. Nalge Co. Nuclepore Corp. Pall Trincor Corp. Pall Trinity Micro Corp. Pallflex Products Corp. H. Reeve Angel & Co., Inc. Schleicher & Schuell, Inc. Selas Flotronics SERFILCO Star Tank & Filter Corp. Arthur H. Thomas Co. Ultra Dynamics Corp. Wilson Diagnostics, Inc.
compressed air Airmatic/Beckett-Harcum American Air Filter Co., Inc. AMFCuno Div. Analabs, Inc. Automatic Switch Co. Balston, Inc. Barnebey-Cheney Brunswick Corp. The Carborundum Co., Commercial Filters Div. Circle Seal Corp. Conoflow Corp. Deltech Engineering, Inc. Filterite Corp. Fram Corp. Gelman Instrument Co. Hankison Corp. Hruden Laboratory Products King Engineering Corp. Kontes Lectrodryer Metex Corp. MG Scientific Gases Microcell Filter, Inc. Millipore Corp. Monsanto Co. Nuclepore Corp. Pall Trincor Corp. Pall Trinity Micro Corp. Parker-Hannifin Corp., Pneumatic Div. Selas Flotronics SERFILCO
gel AMF Cuno Div. Amicon Corp. Bio-Rad Laboratories Brunswick Corp. Corion Instrument Corp. Durrum Instrument Corp. Eastman Kodak Co. Multiform Desiccant Products, Inc. Pharmacia Fine Chemicals, Inc.
glass fiber Ace Glass, Inc. Air Control, Inc. American Air Filter Co., Inc. AMF Cuno Div. Atomic Products Corp. Balston, Inc. BGI, Inc. Brunswick Corp. Cambridge Filter Corp. The Carborundum Co., Commercial Filters Div. Curtin Scientific Co. Farr Co. Fermentation Design, Inc. Filterite Corp. Fisher Scientific Co. Fram Corp. Galileo Electro-Optics Corp. Gelman Instrument Co. Hoefer Scientific instruments Ion Exchange Products, Inc. Johns-Manville Kaufman Glass Co. Microcell Filter, Inc. Millipore Corp. Monsanto Co. National Environmental Instruments Inc. Nuclepore Corp. Pallflex Products Corp. Prolabo H. Reeve Angel & Co., Inc. Research Appliance Co. Schleicher & Schuell, Inc. Scientific Glass & Instruments, Inc. SERFILCO Syncor Products Co., Inc. Toyo Kagaku Sangyo Co. Ltd. WeatherMeasure Corp.
laboratory ceramic Amersil, Inc. Babcock & Wilcock Co., Refractories Div. Coors Porcelain Co. Filterite Corp. Fisher Scientific Co. Fish-Schurman Corp. General Electric Co., Lamp Glass Dept. Ion Exchange Products, Inc. Kaufman Glass Co. Lab Glass, Inc. Microcell Filter, Inc. Norton Co. (Mass) Selas Flotronics SERFILCO Tekmar Co.
Ace Glass, Inc. Acoustica Associates, Inc. Air Products & Chemicals, Inc. Alsop Engineering Corp. AMF Cuno Div. Amicon Corp. Balston, Inc. Bel-Art Products S. Blickman, Inc. Brunswick Corp. CCM: Schaar Scientific, Inc. Chemical Equipment Corp. Chemplast, Inc. Circle Seal Corp. Corning Glass Works Curtin Scientific Co. Custom Scientific Instruments, Inc. Deltech Engineering, Inc.
Denver Equipment Div. The Duriron Co., Inc. DynalabCorp. Ertel Engineering Co. Fisher Scientific Co. Galileo Electro-Optics Corp. A. Gallenkamp and Co. Ltd. Gelman Instrument Co. Graham Manufacturing Co., Inc. Hruden Laboratory Products Ion Exchange Products, Inc. Komline-Sanderson Engineering Corp Lab Glass, Inc. Microcell Filter, Inc. Millipore Corp. Nalge Co. Newark Wire Cloth Co. Norton Co. (Mass) Nuclepore Corp. Owens-Hlinois, Inc. Pall Trincor Corp. Pall Trinity Micro Corp. Prolabo Quartz General Corp. H. Reeve Angel & Co., Inc. Schleicher & Schuell, Inc. Scientific Glass & Instruments, Inc. Selas Flotronics SERFILCO Sethco Manufacturing Corp. SGA Scientific Inc. T. Shriver & Co., Inc. Tekmar Co. Terriss-Consolidated Industries Arthur H. Thomas Co. Toyo Kagaku Sangyo Co. Ltd. WeatherMeasure Corp. Wheaton Scientific Wire Cloth Manufacturers, Inc.
light and color — see also radiation equipment American Optical Corp. (Mass.) Baird-Atomic, Inc. Corion Instrument Corp. Corning Glass Works Diano Corp. The Ealing Corp. Edmund Scientific Co. The Eppley Laboratory, Inc. Esco Products Farrand Optical Co., Inc. Fish-Schurman Corp. Gamma Scientific, Inc. Gelman Instrument Co. Heliotek Optical Thin Film Div. Isomet Corp. Klett Manufacturing Co., Inc. Laser Optics, Inc. E. Leitz, Inc. National Spectrographic Laboratories, Inc. Optical Coating Laboratory, Inc. Optical Industries, Inc. Oriel Corp. of America Perkin-Elmer Corp. Photovolt Corp. Photronic, Inc. Pomfret Research Optics Inc. Rudolph Research Schoeffel Instrument Corp. TCS Zeebac Inc. Carl Zeiss, Inc.
magnetic Eriez Magnetics S.G. FrantzCo., Inc. Sethco Manufacturing Corp.
metal elements AMFCuno Div. Belleville Wire Cloth Co., Inc. Brunswick Corp. Chemiquip Products Co., Inc. Circle Seal Corp. Condyne Instruments Filterite Corp. Hruden Laboratory Products Pall Trincor Corp. Pall Trinity Micro Corp. SERFILCO Ultra Dynamics Corp. Wire Cloth Manufacturers, Inc.
metallic AMFCuno Div. Baird-Atomic, Inc. Belleville Wire Cloth Co., Inc. Chemical Equipment Corp. Circle Seal Corp. Corion Instrument Corp. The Duriron Co., Inc.
LABORATORY
GUIDE
FILTERS, metallic FLASKS, Dewar Hoke Incorporated Ion Exchange Products, Inc. Janos Optical Corp. Kintex, Inc. Liquidyne Corp. Metex Corp. Newark Wire Cloth Co. Optical Coating Laboratory, Inc. Pall Trincor Corp. Pall Trinity Micro Corp. Selas Flotronics The Sel-Rex Co. SERFILCO Sethco Manufacturing Corp. Toyo Kagaku Sangyo Co. Ltd. Ultra Dynamics Corp. Wire Cloth Manufacturers, Inc.
optical colored glass
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Ace Glass, Inc. Alltech Associates, Inc. Barnes Engineering Co. Biomed Instruments, Inc. Brinkmann Instruments, Inc. Buchler Instruments Chemical Data Systems, Inc. Chemical Research Services, Inc. Controlled Atmosphere, Inc. Eberbach Corp. Carlo ErbaS.p.A. A. Gallenkamp and Co. Ltd. Gilson Medical Electronics, Inc. Hi-Temp Glass Products, Inc. Hruden Laboratory Products Instrumentation Specialities Co. Kensington Scientific Corp. Kontes Kraft Apparatus, Inc. Lab Glass, Inc. LKB Instruments, Inc. Luft Instruments, Inc. MISCO Scientific Perkin-Elmer Corp. Phase Separations Ltd. Philips Electronic Instruments, Inc. Sanda, Inc. Scientific Manufacturing Industries Shimadzu Seisakusho, Ltd. Toyo Kagaku Sangyo Co. Ltd. Tudor Scientific Glass Co. Waters Associates Inc. Wilks Scientific Corp. Zena Co.
FRACTION COLLECTORS, gas Barnes Engineering Co. Central Scientific Co. Chemical Data Systems, Inc. Chemical Research Services, Inc. Carlo Erba S.p.A. Hamilton Co. Harrick Scientific Corp. R. J. Harvey Instrument Corp. Lab Glass, Inc. Laboratory Data Control MISCO Scientific Shimadzu Seisakusho, Ltd. Tracor, Inc. Unimetrics Corp. Utopia Instrument Co. Wilks Scientific Corp. Zena Co.
FRACTION COLLECTORS, liquid Ace Glass, Inc. Barnes Engineering Co. Biomed Instruments, Inc. Brinkmann Instruments, Inc. Buchler Instruments Chemical Research Services, Inc. Eberbach Corp. Carlo Erba S.p.A. Fischer & Porter Co. A. Gallenkamp and Co. Ltd. Gilson Medical Electronics, Inc. Hamilton Co. R. J. Harvey Instrument Corp. Hi-Temp Glass Products, Inc. Instrumentation Specialities Co. Kensington Scientific Corp. Lab Glass, Inc. LKB Instruments, Inc. Metro Scientific, Inc. MISCO Scientific Phase Separations Ltd. Philips Electronic Instruments, Inc. Pye Unicam Ltd. Sanda, Inc. Savant Instruments, Inc. Scientific Glass & Instruments, Inc. Scientific Manufacturing Industries Shimadzu Seisakusho, Ltd. Spectrum Medical Industries, Inc. Toyo Kagaku Sangyo Co. Ltd. United Technical Corp. Waters Associates Inc. Wilks Scientific Corp. Zena Co.
140 LG AUGUST 1974
FRACTION COLLECTORS, refrigerated Biomed Instruments, Inc. Brinkmann Instruments, Inc. Buchler Instruments Gilson Medical Electronics, Inc. Instrumentation Specialities Co. Lab Glass, Inc. Lab-Line Instruments, Inc LKB Instruments, Inc. Toyo Kagaku Sangyo Co. Ltd.
FRACTIONATORS, countercurrent Biomed Instruments, Inc. Buchler Instruments E-C Apparatus Corp. Metex Corp. MISCO Scientific
FRACTIONATORS, polymer extractors Amicon Corp. Waters Associates Inc.
Elgar Corp. Fischer & Porter Co. General Electric Co. Hewlett-Packard Co., (Calif.) Kratos Natel Engineering Co., Inc. Non-Linear Systems, Inc. Nuclide Corp. Payne Engineering Co. Power Control Corp. RCA Electronic Components Teledyne Philbrick Trio Laboratories, Inc. Vidar Autodata, Inc.
FREQUENCY, high, puiser Datapulse Hewlett-Packard Co., (Calif.) International Plasma Corp. PRD Electronics, Inc. Velonex
FREQUENCY STANDARDS
FUNNELS, separatory
Browmar Labs., Inc. John Fluke Mfg. Co., Inc. Hewlett-Packard Co., (Calif.) Kinemetrics, Inc. Rohde& Schwarz Sales Co. (USA) Inc. W. F. Sprengnether Instrument Co., Inc.
Ace Glass, Inc. Central Scientific Co. Chatas Glass Co. Corning Glass Works Custom Glassblowing Service Doerr Glass Co. Dynalab Corp. Eck & Krebs, Inc. Fischer & Porter Co. Fisher Scientific Co. A. Gallenkamp and Co. Ltd. Kensington Scientific Corp. Kontes Kontes/Martin, Inc. Lab Glass, Inc. Mercer Glass Works, Inc. Metro Scientific. Inc. Nalge Co. Quartz General Corp. Quickfit Rascher & Betzold, Inc. H. Reeve Angel & Co., Inc. Scientific Glass & Instruments, Inc. Scientific Manufacturing Industries SGA Scientific Inc. Arthur H. Thomas Co. Tudor Scientific Glass Co. Wheaton Scientific
FREEZE DRYERS Ace Glass, inc. Bellco Glass, Inc. Bench Scale Equipment Co. Central Scientific Co. Coleman-Delmar Glass Products Dean Products, Inc. Denton Vacuum, Inc. Edwards High Vacuum, Inc. FEDESCO FTS Systems, Inc. Kontes Kontes/Martin, Inc. Labconco Corp. Lab Glass, Inc. Leybold-Heraeus, Inc. The London Co. New Brunswick Scientific Co., Inc. Pope Scientific, Inc. Stokes Div. Thermovac I ndustries Corp. Toyo Kagaku Sangyo Co. Ltd. Varian Vacuum Div. The VirTisCo. Webber Manufacturing Co., Inc.
FREEZERS Blue M Electric Co. Cincinnati Sub-Zero Products, Inc. Fischer& Porter Co. Forma Scientific, Inc. Frigitemp Hospital & Laboratory Equipment Corp. FTS Systems, Inc. Hotpack Corp. Hydor Therme Corp. Kelvinator Commercial Products, Inc. Lab-Line Instruments, Inc Patentrol Corp. Puffer-Hubbard Refrigerator REVCO, Inc. Tenney Engineering, Inc. Warren/Sherer Div.
FREEZING POINT APPARATUS Advanced Instruments, Inc. Beckman Instruments, Inc. Bench Scale Equipment Co. Curtin Scientific Co. Electro Optical Industries, Inc. Carlo Erba S.p.A. Fiske Associates, Inc. Hotpack Corp. Labconco Corp. Lab-Line Instruments, Inc Leeds & Northrup Co. Mercer Glass Works, Inc. Precision Systems, Inc. Scientific Glass & Instruments, Inc. Arthur H. Thomas Co. Valley Forge Instrument Co., Inc. Webber Manufacturing Co., Inc.
FREQUENCY CONVERTERS Anadex Instruments, Inc. CML-Macarr, Inc. Control Equipment Corp. Del Electronics Corp.
Gelman Instrument Co. Kontes Kontes/Martin, Inc. Lab Glass, Inc. Mallinckrodt Chemical Works, Science Products Div. Mallinckrodt Chemical Works, Plastics Div. Metro Scientific. Inc. Millipore Corp. Nalge Co. Nuclear Equipment Chemical Corp. Owens-Illinois, Inc. Pall Trinity Micro Corp. Quartz General Corp. Quickfit Schleicher & Schuell, Inc. Scientific Glass & Instruments, Inc. SGA Scientific Inc. Terra-Marine Bioresearch Terriss-Consolidated Industries Arthur H. Thomas Co. Wheaton Scientific
FRICTION TESTING EQUIPMENT Custom Scientific Instruments, Inc. Halliburton Services R. J. Harvey Instrument Corp. IMASS, Inc. Testing Machines, Inc.
FUEL CELLS AND ACCESSORIES Bel-Art Products Power Applications, Inc. Uniroyal, Inc.
FUNNELS FURNACES Alltech Associates, Inc. Applied Coatings, Inc. Bel-Art Products Wm. Boekel &Co., inc. Central Scientific Co. Chemical Research Services, Inc. Coors Porcelain Co. Corning Glass Works Custom Glassblowing Service Doerr Glass Co. Dynalab Corp. Ellisco, Inc. FEDESCO Fischer & Porter Co. Fisher Scientific Co. Gelman Instrument Co. General Scientific Equipment Co. Hruden Laboratory Products Kontes Mallinckrodt Chemical Works, Science Products Div. Mallinckrodt Chemical Works, Plastics Div. Maryland Plastics, Inc. Mercer Glass Works, Inc. Met-Bay, Inc. Metro Scientific. Inc. Nalge Co. Nalgene Industrial Div. Owens-Illinois, Inc. Quartz General Corp. Rascher & Betzold, Inc. Scientific Glass & Instruments, Inc. SGA Scientific Inc. Sherwood Medical Industries, Inc. Terriss-Consolidated Industries Arthur H. Thomas Co. Ultra Carbon Corp. Wheaton Scientific
FUNNELS, filter Bel-Art Products Central Scientific Co. Coors Porcelain Co. Corning Glass Works Custom Glassblowing Service Doerr Glass Co. Dynalab Corp. FEDESCO Fischer & Porter Co. Fisher Scientific Co. A. Gallenkamp and Co. Ltd.
general purpose — see also combustion equipment Aremco Products, Inc. Astro Industries, Inc. Autoclave Engineers, Inc. Bico, Inc. Blue M Electric Co. BTU Engineering Corp. Centorr Associates, Inc. Central Scientific Co. Chemical Data Systems, Inc. Despatch Oven Co. DOHRMANN Div. Envirotech Corp. Dynalab Corp. Electra Products Co. Electrothermal Ltd. Carlo Erba S.p.A. FEDESCO Fisher Scientific Co. A. Gallenkamp and Co. Ltd. GCA/Vacuum Industries The Grieve Corp. Harper Electric Furnace Corp. Harrop Laboratories C. I. Hayes, Inc. Hotpack Corp. Κ. Η. Huppert Co., Inc. Hydor Therme Corp. Image Analysing Computers, Inc. Industrial Systems Corp. Ipsen Industries Jelrus Instrument Corp. Lab Glass, Inc. L & L Special Furnace Co. Leco Corp. LeMont Scientific, Inc. Lindberg Lucifer Furnaces, Inc. Middlesex General Ind. MSI Industries, Inc. Pereny Equipment Co., Inc. Phase Separations Ltd. Procedyne Corp. Prolabo Research, Inc. Selas Corp. of America Shimadzu Seisakusho, Ltd. Sunbeam Equipment Corp. Surface Combustion Div. Testing Machines, Inc. Thermolyne Corp. Arthur H. Thomas Co.
LABORATORY
GUIDE
FURNACES, general purpose FURNITURE, LABORATORY Trent, Inc. Varian Vacuum Div. Wale Apparatus Co. Watkins-Johnson Co. Zena Co.
Centorr Associates, Inc. GCA/Vacuum Industries Humphreys Corp. Leybold-Heraeus, Inc. Materials Research Corp. Nuclide Corp. Nuclide Corp., AGV Div. Shimadzu Seisakusho, Ltd. Zeebac Inc. Zena Co.
box
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Aremco Products, Inc. Autoclave Engineers, Inc. Blue M Electric Co. Buehler Ltd. Burrell Corp. Centorr Associates, Inc. Despatch Oven Co. Electra Products Co. A. Gallenkamp and Co. Ltd. The Grieve Corp. Harper Electric Furnace Corp. Harrop Laboratories C. I. Hayes, Inc. Hotpack Corp. Κ. Η. Huppert Co., Inc. Industrial Systems Corp. Ipsen Industries L & L Special Furnace Co. Leco Corp. LeMont Scientific, Inc. Lindberg Lucifer Furnaces, Inc. Middlesex General Ind. MSI Industries, Inc. Pereny Equipment Co., Inc. Shimadzu Seisakusho, Ltd. Sunbeam Equipment Corp. Surface Combustion Div. Thermolyne Corp. Trent, Inc. Varian Vacuum Div. Watkins-Johnson Co.
crucible Aremco Products, Inc. Autoclave Engineers, Inc. Blue M Electric Co. Buehler Ltd. Centorr Associates, Inc. Central Scientific Co. A. Gallenkamp and Co. Ltd. Harper Electric Furnace Corp. Harrop Laboratories Κ. Η. Huppert Co., Inc. Industrial Systems Corp. Jelrus Instrument Corp. Lab Glass, Inc. L & L Special Furnace Co. LeMont Scientific, Inc. Lepel High Frequency Labs., Inc. Lindberg Lucifer Furnaces, Inc. Materials Research Corp. MSI Industries, Inc. Pereny Equipment Co.. Inc. Shimadzu Seisakusho, Ltd. Surface Combustion Div. Varian Vacuum Div. Watkins-Johnson Co. Zena Co.
crystal growing Astro Industries, Inc. Atomergic Chemetals Co. Autoclave Engineers, Inc. Centorr Associates, Inc. Harper Electric Furnace Corp. C. I. Hayes, Inc. Humphreys Corp. Image Analysing Computers, Inc. Industrial Systems Corp. Laser Technology, Inc. LeMont Scientific, Inc. Lepel High Frequency Labs., Inc. Arthur D. Little, Inc. Materials Development Corp. Materials Research Corp. Pereny Equipment Co., Inc. Semi-Elements. Inc. Tem-Pres Research Div. Varian Vacuum Div. Zena Co.
142 LG AUGUST 1974
fusion (for coal determination) Engelhard Minerals & Chemicals Corp., Engelhard Industries Div. Harper Electric Furnace Corp. Κ. Η. Huppert Co., Inc. L & L Special Furnace Co. Lindberg Lucifer Furnaces, Inc. Pereny Equipment Co., Inc. Zena Co.
induction Angstrom, Inc. Atomergic Chemetals Co. Centorr Associates, Inc. GCA/Vacuum Industries Humphreys Corp. Image Analysing Computers, Inc. Leco Corp. Lepel High Frequency Labs., Inc. Leybold-Heraeus, Inc. Shimadzu Seisakusho, Ltd. Sunbeam Equipment Corp. Tegal Corp. Watkins-Johnson Co.
muffle Astro Industries, Inc. Autoclave Engineers, Inc. Babcock & Wilcock Co., Power Generation Div. Bico,Inc. Blue M Electric Co. BTU Engineering Corp. Burrell Corp. Centorr Associates, Inc. Central Scientific Co. Engelhard Minerals & Chemicals Corp., Engelhard Industries Div. A. Gallenkamp and Co. Ltd. Gardner Laboratory, Inc. GCA/Precislon Scientific GCA/Vacuum Industries Harper Electric Furnace Corp. Harrop Laboratories C. I. Hayes, Inc. Hotpack Corp. Κ. Η. Huppert Co., Inc. Hydor Therme Corp. Image Analysing Computers, Inc. Industrial Systems Corp. Instron Corp. Jelrus Instrument Corp. Kintex, Inc. Lab Glass, Inc. L & L Special Furnace Co. Lindberg Lucifer Furnaces, Inc. MSI Industries, Inc. Pereny Equipment Co.. Inc. Phase Separations Ltd. Prolabo Research, Inc. Shimadzu Seisakusho. Ltd. StelliteDiv. Sunbeam Equipment Corp. Surface Combustion Div. Tem-Pres Research Div. Testing Machines, Inc. Thermolyne Corp. Trent, Inc. Watkins-Johnson Co. Zena Co.
plasma resistance Humphreys Corp. International Plasma Corp. Technics, Inc.
pressurized Astro Industries, Inc. Autoclave Engineers, Inc. FEDESCO Image Analysing Computers, Inc. Industrial Systems Corp. Arthur D. Little, Inc. Lucifer Furnaces, Inc. Tem-Pres Research Div. WSF Industries, Inc.
resistance strip Abar Corp. Autoclave Engineers, Inc. Richard D. Brew & Co., Inc. BTU Engineering Corp. Centorr Associates, Inc. GCA/Vacuum Industries Κ. Η. Huppert Co., Inc.
Hydor Therme Corp. Industrial Systems Corp. Leeds & Northrup Co. Lindberg Lucifer Furnaces, Inc. Matthey Bishop, Inc. Shimadzu Seisakusho, Ltd.
Shimadzu Seisakusho, Ltd. Theta Industries, Inc. Varian Vacuum Div. Watkins-Johnson Co.
sample button
Abar Corp. Airco Temescal Astro Industries, Inc. Autoclave Engineers, Inc. Balzers High Vacuum Corp. Richard D. Brew & Co., Inc. Centorr Associates, Inc. Cooke Vacuum Products, Inc. D& W Industries, Inc. Denton Vacuum, Inc. Edwards High Vacuum, inc. Electra Products Co. Elscint Inc. Galileo Corp. of America Gardner Laboratory, Inc. GCA/Vacuum Industries C. 1. Hayes, Inc. High Vacuum Equipment Corp. Κ. Η. Huppert Co., Inc. Image Analysing Computers, Inc. Industrial Systems Corp. Ipsen Industries Leybold-Heraeus, Inc. Lindberg Materials Research Corp. Middlesex General Ind. Nuclide Corp. Nuclide Corp., AGV Div. Perkin-Elmer Ultek, Inc. Schuco Setaram Shimadzu Seisakusho, Ltd. Sunbeam Equipment Corp. Surface Combustion Div. Technics, Inc. Tegal Corp. Tem-Pres Research Div. Thermionics Laboratory, Inc. T-M Vacuum Products Co. Torr Vacuum Products Varian Vacuum Div. WSF Industries, Inc.
Centorr Associates, Inc. GCA/Vacuum Industries High Vacuum Equipment Corp. Humphreys Corp. L & L Special Furnace Co. Leybold-Heraeus, Inc. Lucifer Furnaces, Inc. Materials Research Corp. Nuclide Corp. Nuclide Corp., AGV Div. Pitchford Industries Inc. Zeebac Inc.
temperature gradient Astro Industries, Inc. Autoclave Engineers, Inc. BTU Engineering Corp. Centorr Associates, Inc. Columbia Scientific Industries Gardner Laboratory, Inc. Harrop Laboratories Industrial Systems Corp. Lindberg Research, Inc. Selas Corp. of America Surface Combustion Div. Tem-Pres Research Div. Watkins-Johnson Co.
tube Astro Industries, Inc. Autoclave Engineers, Inc. Blue M Electric Co. BTU Engineering Corp. Buehler Ltd. Burrell Corp. Centorr Associates, inc. Chemical Data Systems, Inc. Coors Porcelain Co. Engelhard Minerals & Chemicals Corp., Engelhard Industries Div. Fisher Scientific Co. A. Gallenkamp and Co. Ltd. Harper Electric Furnace Corp. Harrop Laboratories Hotpack Corp. Image Analysing Computers, Inc. Industrial Systems Corp. Lab Glass, Inc. L & L Special Furnace Co. Leco Corp. LeMont Scientific, Inc. Lindberg Lucifer Furnaces, Inc. National Ceramic Products Co. Pereny Equipment Co., Inc. Phase Separations Ltd. Prolabo Stanton Redcroft Stellite Div. Surface Combustion Div. Tem-Pres Research Div. Arthur H. Thomas Co. Trent. Inc. Varian Vacuum Div. Watkins-Johnson Co.
ultra-high temperature Abar Corp. Aremco Products, Inc. Astro Industries. Inc. Atomergic Chemetals Co. Autoclave Engineers, Inc. Richard D. Brew & Co., Inc. Centorr Associates, Inc. GCA/Vacuum Industries Harper Electric Furnace Corp. C. I. Hayes, Inc. Humphreys Corp. Hydor Therme Corp. Image Analysing Computers, Inc. Ipsen Industries L & L Special Furnace Co. LeMont Scientific, Inc. Lindberg Materials Research Corp. Nuclide Corp. Nuclide Corp., AGV Div. Pereny Equipment Co., Inc. Philips Electronic Instruments, Inc. Procedyne Corp. Research, Inc. Schuco Selas Corp. of America Setaram
vacuum
x-ray diffraction Blake Industries, Inc. Diano Corp. Diano Corp., Industrial X-Ray Div. Electronics & Alloys, Inc. Enraf-Nonius, Inc. General Electric Co., Analytical Measurements Materials Research Corp. Philips Electronic Instruments, Inc. Rigaku/USA Theta Industries, Inc.
FURNITURE, LABORATORY benches, tables and desks Alberene Stone American Optical Corp. (Mass.) S. Blickman, Inc. Browne-Morse Co. CCM: Schaar Scientific, Inc. Contamination Control, Inc. Controlled Environment Equipment Corp. Curtin Scientific Co. Cyclo Sciences, Inc. Duralab Equipment Corp. Equipto Fisher Scientific Co. A. Gallenkamp and Co. Ltd. Haber Instruments, Inc. Hamilton Industries The Heusser Instrument Co. Kewaunee Scientific Equipment Corp. Labconco Corp. Lab-Line Instruments, Inc Laboratory Furniture Co., Inc. Matheson Scientific Penn-Chem Corp. Perimair Co. Phase Separations Ltd. Production Systems, Inc. Reflector Hardware Corp. St. Charles Manufacturing Co. Sargent-Welch Scientific Co. Ε. Η. Sheldon Equipment Co. Sturdilite, Inc. Terriss-Consolidated Industries United Technical Corp. VWR Scientific
cabinets American Optical Corp. (Mass.) Bethlehem Apparatus Co., Inc. S. Blickman, Inc.
LABORATORY
GUIDE
FURNITURE, LABORATORY GAGES, vacuum Browne-Morse Co. CCM: Schaar Scientific. Inc. Clay Adams Curtin Scientific Co. Duralab Equipment Corp. Equipto Fisher Scientific Co. Frigitemp Hospital & Laboratory Equipment Corp. A. Gallenkamp and Co. Ltd. Hamilton Industries HEMCOCorp. Hruden Laboratory Products Instron Corp. Kewaunee Scientific Equipment Corp. Labconco Corp. Lab-Line Instruments, Inc Laboratory Furniture Co., Inc. Matheson Scientific Perimair Co. Production Systems, Inc. Reflector Hardware Corp. St. Charles Manufacturing Co. Ε. Η. Sheldon Equipment Co. Sturdilite, Inc. Terriss-Consolidated Industries United Technical Corp. VWR Scientific
HEMCOCorp. Kewaunee Scientific Equipment Corp. Labconco Corp. Laboratory Furniture Co., Inc. Perimair Co. Production Systems, Inc. St. Charles Manufacturing Co. Ε. Η. Sheldon Equipment Co. Southern Cross Manufacturing Corp. Sturdilite, Inc. Terriss-Consolidated Industries United Technical Corp.
plastic casework Bel-Art Products Hamilton Industries HEMCOCorp. Kaufman Glass Co. Labconco Corp. Matheson Scientific Nalgene Industrial Div. Production Systems, Inc. St. Charles Manufacturing Co. United Technical Corp.
wood casework fixtures
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American Optical Corp. (Mass.) S. Slickman, Inc. Browne-Morse Co. CCM: Schaar Scientific, Inc. Curtin Scientific Co. Duralab Equipment Corp. Fisher Scientific Co. A. Gallenkamp and Co. Ltd. Hamilton Industries Haws Drinking Faucet Co. HEMCOCorp. Kaufman Glass Co. Kewaunee Scientific Equipment Corp. Maurice A. Knight Co. Labconco Corp. Lab-Line Instruments, Inc Laboratory Furniture Co., Inc. Matheson Scientific Nalgene Industrial Div. Perimair Co. Fred Portz Jr. Associates Production Systems, Inc. OUALCO R & G Sloane Mfg. Co., Inc. St. Charles Manuiacturing Co. Ε. Η. Sheldon Equipment Co. Sturdilite, Inc. Τ & S Brass& Bronze Works, Inc. Terriss-Consolidated Industries United Technical Corp. VWR Scientific
furniture tops Alberene Stone S. Blickman, Inc. Browne-Morse Co. CCM: Schaar Scientific, Inc. Controlled Environment Equipment Corp. Corning Glass Works Curtin Scientific Co. Duralab Equipment Corp. The Duriron Co., Inc. Fisher Scientific Co. Frigitemp Hospital A Laboratory Equipment Corp. A. Gallenkamp and Co. Ltd. Hamilton Industries HEMCOCorp. Johns-Manville Kewaunee Scientific Equipment Corp. Labconco Corp. Lab-Line Instruments, Inc Laboratory Furniture Co-, Inc. Matheson Scientific Nicolet Industries Perimair Co. Fred Portz Jr. Associates . Production Systems, Inc. Reflector Hardware Corp. St. Charles Manufacturing Co. Sturdilite, Inc. United Technical Corp. VWR Scientific
metal casework Amsco Industrial Co. S. Blickman, Inc. Browne-Morse Co. CCM: Schaar Scientific, Inc. Controlled Atmosphere, Inc. Curtin Scientific Co. Duralab Equipment Corp. Ellisco, Inc. Fisher Scientific Co. Frigitemp Hospital & Laboratory Equipment Corp. Hamilton Industries
144 LG AUGUST 1974
Contamination Control, Inc. Curtin Scientific Co. Hamilton Industries Kewaunee Scientific Equipment Corp. Laboratory Furniture Co., Inc. Production Systems. Inc. Ε. Η. Sheldon Equipment Co. United Technical Corp.
GAGES ionization Balzers High Vacuum Corp. Central Scientific Co. CHA Industries Cooke Vacuum Products, Inc. CVC Products, Inc. D& W Industries, Inc. Denton Vacuum, Inc. Edwards High Vacuum, Inc. The Fredericks Co. GCA/Precision Scientific Granville-Phillips Co. High Vacuum Equipment Corp. Perkin-Elmer Ultek, Inc. RCA Electronic Components Technics, Inc. Vactronic Lab. Equipment, Inc. Varian Vacuum Div. Veeco Instruments, Inc. Westinghouse Electric Corp.
level Automatic Pump & Equipment Co. Automation Products, Inc. Crosby Valve & Gage Co. Daniel Industries, Inc. Dwyer Instruments, Inc. Eugene Ernst Products Co. Honeywell, Inc., Process Control Div. ITT Barton Jerguson Gage & Valve Co. Kay-Ray, Inc. King Engineering Corp. Kratos Lumenite Electronic Corp. Martin-Decker Co. The Meriam Instrument Div. MSA Research Corp. National Sonics The Ohmart Corp. Princo Instruments, Inc. Realist, Inc. C. W. Stevens, Inc. Uehling Instrument Co.
McLeod, vacuum Ace Glass, Inc. Balzers High Vacuum Corp. Cal-Glass For Research, Inc. Central Scientific Co. Chatas Glass Co. Coleman-Delmar Glass Products Cooke Vacuum Products, Inc. Custom Glassblowing Service CVC Products, Inc. D & W Industries, Inc. Eck & Krebs, Inc. Edwards High Vacuum, Inc. The Fredericks Co. Roger Gilmont Instruments, Inc. Greiner Scientific Corp. Hastings-Raydist Ideal Aerosmith, Inc.
Kinney Vacuum Co. Kontes Kontes/Martin. Inc. Lab Glass, Inc. Leybold-Heraeus, Inc. Manostat Corp. Metro Scientific. Inc. Perkin-Elmer Corp. Quartz General Corp. Sargent-Welch Scientific Co. Scientific Glass & Instruments, Inc. SGA Scientific Inc. Shimadzu Seisakusho, Ltd. Stokes Div. Thermovac Industries Corp. Todd Scientific Co. Vacuum Research Mfg. Co. The VirTisCo.
mercury manometer Ace Glass, Inc. Ace Pump Corp. Bristol Div. of Acco Cal-Glass For Research, Inc. Central Scientific Co. Chatas Glass Co. Coleman-Delmar Glass Products Curtin Scientific Co. Custom Glassblowing Service Dwyer Instruments, Inc. Eberbach Corp. Eck & Krebs, Inc. Fisher Scientific Co. The Foxboro Co. The Fredericks Co. Roger Gilmont Instruments, Inc. Greiner Scientific Corp. Ideal Aerosmith, Inc. Inteco Corp. Kontes Kontes/Martin, Inc. Lab Glass, Inc. Leybold-Heraeus, Inc. Manostat Corp. The Meriam Instrument Div. Metro Scientific, Inc. Perkin-Elmer Corp. Quartz General Corp. Sargent-Welch Scientific Co. Sargent-Welch Scientific Co., Vacuum Products Div. Scientific Glass & Instruments, Inc. SGA Scientific Inc. Shimadzu Seisakusho, Ltd. Statham Instruments, Inc. Taylor Instrument/Consumer Products Div. Uehling Instrument Co. Volumetrics Wallace & Tiernan WeatherMeasure Corp. Wilmad Glass Co., Inc.
pressure Ace Glass. Inc. Ace Pump Corp. Airco, Inc. Airmatic/Beckett-Harcum Air Products & Chemicals, Inc. Alltech Associates, Inc. Ametek/U.S. Gauge Automatic Pump & Equipment Co. Bailey Meter Co. Beckman Instruments, Inc. Bell & Howell Biotronex Lab., Inc. Bristol Div. of Acco Fred S. Carver Inc. Chromatronix C. J. Enterprises Climet Instruments Co. Coleman-Delmar Glass Products Crosby Valve & Gage Co. Curtin Scientific Co. Datametrics The Duriron Co., Inc. Dwyer Instruments. Inc. Enerpac Eugene Ernst Products Co. Filterchem Corp. Fisher Scientific Co. The Foxboro Co. Gulton Industries, Inc. Harris Calorific Harvard Apparatus Co., Inc. The Hays Corp. High Pressure Equipment Co. E. Vernon Hill, Inc. Hoke Incorporated Honeywell, Inc., Process Control Div. ITT Barton Kaman Sciences Corp. Kontes Kratos Lif-O-Gen, Inc. Manostat Corp. Marsh Instrument Co. Marshalltown Manufacturing, Inc.
Martin-Decker Co. Matheson Gas Products Mensor Corp. The Meriam Instrument Div. Middlesex General Ind. MKS Instruments, Inc. Modern Engineering Co., Inc. Moeller Instrument Co. MSA Research Corp. Non-Linear Systems, Inc. OXEQUIP Health Industries Precision Gas Products, Inc. Pressure Products Industries Princo Instruments, Inc. Pyles Industries, Inc. Robertshaw Controls Co. Robinson-Halpern Co. Ruska Instrument Corp. Schaevitz Engineering Scientific Gas Products Inc. Scientific Glass & Instruments, Inc. SGA Scientific Inc. Shimadzu Seisakusho, Ltd. Statham Instruments, Inc. Stokes Div. Sundstrand Data Control, Inc. Supelco, Inc. Taylor Instrument/Consumer Products Div. Teledyne Taber Terriss-Consolidated Industries Tescom Corp. Texas Instruments, Inc., Digital Systems Div. Uehling Instrument Co. Utopia Instrument Co. Varian Vacuum Div. Volumetrics Wallace & Tiernan Weksler Instruments Corp, Worden Quartz Products
pressure, quartz AIRCO Industrial Gases Amersil, Inc. The Duriron Co., Inc. Hewlett-Packard, Avondale Div. Kontes/Martin, Inc. Mensor Corp. Ruska Instrument Corp. Shimadzu Seisakusho, Ltd. Sundstrand Data Control, Inc. Texas Instruments, Inc., Digital Systems Div. Volumetrics Worden Quartz Products
vacuum Ace Glass, Inc. Ace Pump Corp. Alcatel Vacuum Products Ametek/U.S. Gauge Andonian Cryogenics, Inc. Associated Electrical Industries International Ltd. Automatic Pump & Equipment Co. Bailey Meter Co. Balzers High Vacuum Corp. Beach-Russ Co. Bristol Div. of Acco Central Scientific Co. CHA Industries Coleman-Delmar Glass Products Cooke Vacuum Products, Inc. Crosby Valve & Gage Co. Curtin Scientific Co. Custom Glassblowing Service CVC Products, Inc. D& W Industries, Inc. Datametrics Denton Vacuum, Inc. Dwyer Instruments, Inc. Eck & Krebs, Inc. Edwards High Vacuum, Inc. Electron Technology, Inc. Enerpac Eugene Ernst Products Co. Fisher Scientific Co. The Foxboro Co. The Fredericks Co. GCA/Precision Scientific General Electric Co. General Electric Co., Analytical Measurements Roger Gilmont Instruments, Inc. Granville-Phillips Co. Harris Calorific Hastings-Raydist High Vacuum Equipment Corp. High Voltage Engineering Corp. Kinney Vacuum Co. Kontes Kontes/Martin, Inc. Lab Glass, Inc. Leybold-Heraeus, Inc. Manostat Corp. Marsh Instrument Co. Marshalltown Manufacturing, Inc.
LABORATORY
GUIDE
GAGES, vacuum GENERATORS, x-ray
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Ace Glass, Inc. Carlo ErbaS.p.A. Fisher Scientific Co. Forma Scientific, Inc. A. Gallenkamp and Co. Ltd. Gardner Laboratory, Inc. GCA/Precision Scientific Greiner Scientific Corp. Humboldt Mfg. Co. Industrial Testing Apparatus, Inc. Kelvinator Commercial Products, Inc. King Refrigeration Mfg. Co. Koehler Instrument Co., Inc. Kontes/Martin, Inc. Lab-Line Instruments, Inc Lawler Mfg., Inc. REVCO, Inc. Scientific Glass & Instruments, Inc. Thermometer Corp. of America United States Testing Co., Inc. Wescan Instruments, Inc.
colorimeter Ace Glass, Inc. Atago Optical Works Co.. Ltd. Baroid Div. Bausch & Lomb, Inc., Analytical Systems Div. Bausch & Lomb, SOPD Div. Beckman Instruments, Inc. Brinkmann Instruments, Inc. Delta Scientific Corp. Diano Corp. E. I. du Pont de Nemours & Co., Inc. Enraf-Nonius, Inc. Carlo Erba S.p.A. Fisher Scientific Co. Fish-Schurman Corp. A. Gallenkamp and Co. Ltd. Gardner Laboratory, Inc. GCA/Precision Scientific Glenco Scientific, Inc. Klett Manufacturing Co., Inc. Koehler Instrument Co., Inc. LaMotte Chemical Products Co. LKB Instruments, Inc. Lovibond of America, Inc. Macbeth Color & Photometry Markson Science, Inc. Perkin-Elmer Corp. Philips Electronic Instruments, Inc. Photovolt Corp. Photronic, Inc. Rank Precision Industries Ltd., Analytical Div. Sanda, Inc. SSR Instruments Co. United States Testing Co., Inc. Universal Interloc, Inc. WeatherMeasure Corp. Carl Zeiss, Inc.
contamination testing apparatus Baird-Atomic, Inc. Baroid Div. Beckman Instruments, Inc. Brinkmann Instruments, Inc. Cahn Instruments Coulter Electronics, Inc. Environmental Sciences Associates, Inc. GCA/Precision Scientific Millipore Corp. National Environmental Instruments Inc. Royco Instruments, Inc. Wheaton Scientific
corrosion test apparatus Ace Glass, Inc. Autoclave Engineers, Inc. Automation Industries, Inc. Baroid Div. Beckman Instruments, Inc. Chemical Equipment Corp. Gardner Laboratory, Inc. GCA/Precision Scientific Koehler Instrument Co., Inc. Kontes Lab-Line Instruments, Inc Lawler Mfg., Inc. 3M Co., New Business Ventures Div. Magna Corp.
176 LG AUGUST 1974
SGA Scientific Inc. Tennelec, Inc. Testing Machines, Inc. United States Testing Co.. Inc.
Lab-Line Instruments, Inc Lawler Mfg., Inc. Scientific Glass & Instruments, Inc. United States Testing Co., Inc.
demulsifying apparatus
halogen determination apparatus and chemicals
FEDESCO GCA/Precision Scientific Global Process Equipment. Inc. Koehler Instrument Co., Inc. Pen Kern Co. Research Appliance Co. Charles Ross & Son Co. Testlab
distillation apparatus Ace Glass, Inc. Baroid Div. Bellco Glass, Inc. Wm. Boekel & Co.. Inc. B/R Glass, Inc. R. P. Cargille Labs.. Inc. Chem-Pro Equipment Corp. Corning Glass Works Curtin Scientific Co. Custom Glassblowing Service CVC Products, Inc. Distillation Engineering Co. Electrothermal Ltd. Carlo Erba S.p.A. A. Gallenkamp and Co. Ltd. GCA/Precision Scientific Glenco Scientific, Inc. Greiner Scientific Corp. Humboldt Mfg. Co. Koehler Instrument Co., Inc. Kontes Kontes/Martin. Inc. Labconco Corp. Lab Glass, Inc. Lab-Line Instruments. Inc Lawler Mfg., Inc. Metex Corp. Metro Scientific, Inc. Microcell Filter, Inc. MISCO Scientific Owens-Illinois, Inc. Perkin-Elmer Corp. Podbielniak, Inc. Precision Distillation Apparatus Co. Scientific Glass & Instruments, Inc. SGA Scientific Inc. Stanford Glassblowing Labs., Inc. Todd Scientific Co. United States Testing Co., Inc. Wheaton Scientific Zena Co.
dropping point apparatus GCA/Precision Scientific Lab-Line Instruments, Inc Mettler Instrument Corp. United States Testing Co., Inc.
flash point tester Wm. Boekel & Co., Inc. Carlo Erba S.p.A. Erdco Engineering Corp. Fisher Scientific Co. A. Gallenkamp and Co. Ltd. GCA/Precision Scientific Greiner Scientific Corp. Humboldt Mfg. Co. Koehler Instrument Co., Inc. Lab-Line Instruments, Inc Testing Machines, Inc. Testlab United States Testing Co., Inc. Zena Co.
grease working and testing apparatus GCA/Precision Scientific Greiner Scientific Corp. Humboldt Mfg. Co. Koehler Instrument Co., Inc. Lab-Line Instruments, Inc Mettler Instrument Corp. Scientific Glass & Instruments, Inc. Testing Machines, Inc. Thermo-Electric Co. United States Testing Co., Inc. Zena Co.
gum content apparatus GCA/Precision Scientific Greiner Scientific Corp. Koehler Instrument Co., Inc.
Bico, Inc. DOHRMANN Div. Envirotech Corp. E. I. du Pont de Nemours & Co., Inc. General Electric Co., Analytical Measurements Parr Instrument Co.
See the DOHRMANN Trace Chlorine ad on page 100
sulfur determining apparatus Ace Glass. Inc. Antek Instruments, Inc. Baroid Div. Beckman Instruments, Inc. Bico, Inc. Chemical Equipment Corp. Columbia Scientific Industries Harry W. Dietert Co. DOHRMANN Div. Envirotech Corp. Dynasciences Corp. F & J Scientific GCA/Precision Scientific Glenco Scientific, Inc. Greiner Scientific Corp. Houston-Atlas, Inc. ITT Barton
See the DOHRMANN trace sulfur ad on page 100
Shimadzu Seisakusho, Ltd. Arthur H. Thomas Co.
melting point apparatus — see also melting point apparatus Ace Glass, Inc. Beckman Instruments. Inc. Wm. Boekel &Co.. Inc. E. I. du Pont de Nemours & Co., Inc. Electrothermal Ltd. Fisher Scientific Co. A. Gallenkamp and Co. Ltd. GCA/Precision Scientific Humboldt Mfg. Co. Koehler Instrument Co., Inc. Kontes Kontes/Martin, Inc. Lab Glass, Inc. Lab-Line Instruments, Inc Laboratory Devices Metro Scientific, Inc. Mettler Instrument Corp. MISCO Scientific National Instrument Co., Inc. Pacific Transducer Corp. Parr Instrument Co. Precision Distillation Apparatus Co. Projectina USA Rutherford Research Products Co. Scientific Glass & Instruments, Inc. Shimadzu Seisakusho. Ltd. Testing Machines, Inc. Thermometer Corp. of America Arthur H. Thomas Co.
oxidation apparatus Ace Glass, Inc. Apex Scientific Co. A. Gallenkamp and Co. Ltd. GCA/Precision Scientific R. J. Harvey Instrument Corp. Kensington Scientific Corp. Kernco Instruments, Inc. Koehler Instrument Co., Inc. Lab-Line Instruments. Inc Lawler Mfg., Inc. Scientific Manufacturing Industries U. S. Fused Quartz Co., Inc.
penetrometers E. I. du Pont de Nemours & Co., Inc. A. Gallenkamp and Co. Ltd. Gardner Laboratory, Inc. GCA/Precision Scientific Humboldt Mfg. Co. Industrial Testing Apparatus. Inc. Koehler Instrument Co., Inc. Lab-Line Instruments, Inc Rutherford Research Products Co. Testlab United States Testing Co., Inc.
solvent recovery stills B/R Glass, Inc. Branson Instruments, Inc. GCA/Precision Scientific Phillips Manufacturing Co. Podbielniak, Inc. Precision Distillation Apparatus Co. Scientific Glass & Instruments, Inc. Stanford Glassblowing Labs., Inc. Tudor Scientific Glass Co.
Koehler Instrument Co., Inc. Lab Glass, Inc. Leco Corp. The London Co. Parr Instrument Co. Podbielniak, Inc. Quartz General Corp. Scientific Glass & Instruments, Inc. Shimadzu Seisakusho, Ltd. Arthur H. Thomas Co. Utopia Instrument Co. Zena Co.
tetraethyllead apparatus Ace Glass, Inc. Curtin Scientific Co. Delta Scientific Corp. Environmental Sciences Associates, Inc. GCA/Precision Scientific Glenco Scientific, Inc. Koehler Instrument Co., Inc. Kontes Kontes/Martin, Inc. Lab Glass. Inc. National Environmental Instruments Inc. Prolabo Quartz General Corp. Scientific Glass & instruments, Inc.
vapor pressure apparatus Chemical Equipment Corp. FEDESCO GCA/Precision Scientific Koehler Instrument Co., Inc. Lab-Line Instruments, Inc Manufacturers Engineering & Equipment Corp. MKS Instruments, Inc. United States Testing Co., Inc.
viscometers Ace Glass, Inc. Automation Products. Inc. Baroid Div. The Bendix Corp., Process Instruments Div. Bico, Inc. Wm. Boekel & Co.. Inc. C. W. Brabender Instruments, Inc. Brookfield Engineering Labs., Inc. Cannon Instrument Co. R. P. Cargille Labs., Inc. Chatas Glass Co. Custom Glassblowing Service Carlo Erba S.p.A. Fann Instrument Corp. Ferranti Electric, Inc. Fish-Schurman Corp. A. Gallenkamp and Co. Ltd. Gam Rad, Inc. Gardner Laboratory, Inc. GCA/Precision Scientific General Electric Co. Roger Gilmont Instruments, Inc. Greiner Scientific Corp. Haake, Inc. Humboldt Mfg. Co. IMASS, Inc. Industrial Testing Apparatus, Inc. ITT Barton Kaltec Scientific Instrument, Inc. Kensington Scientific Corp. Koehler Instrument Co., Inc. Lab Glass, Inc.
LABORATORY
GUIDE
PETROLEUM TESTING EQUIPMENT, viscometers PHOTOGRAPHIC INTERPRETATION EQUIPMENT Lab-Line Instruments, Inc Monsanto Co. NametreCo. Norcross Corp. PolyScience Corp. Prolabo Ruska Instrument Corp. Sargent-Welch Scientific Co. Scientific Manufacturing Industries Scott Testers Setaram Shimadzu Seisakusho, Ltd. Testing Machines, Inc. Arthur H. Thomas Co. Tudor Scientific Glass Co. United States Testing Co., Inc. Utopia Instrument Co. Wescan Instruments, Inc. Zena Co.
viscosity baths
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Ace Glass, Inc. Apex Scientific Co. Bench Scale Equipment Co. Btco, Inc. C. W. Brabender Instruments, Inc. Brookfield Engineering Labs., Inc. Cannon Instrument Co. Carlo Erba S.p.A. Ferranti Electric, Inc. Fisher Scientific Co. Forma Scientific, Inc. A. Gallenkamp and Co. Ltd. Gam Rad, Inc. Gardner Laboratory, Inc. GCA/Precision Scientific Greiner Scientific Corp. Haake, Inc. Hotpack Corp. Hydor Therme Corp. Industrial Testing Apparatus, Inc. Kensington Scientific Corp. King Refrigeration Mfg. Co. Koehler Instrument Co., Inc. Lab-Line Instruments, Inc Lawler Mfg., Inc. Neslab Instruments, Inc. Phase Separations Ltd. Prolabo Sargent-Welch Scientific Co. Scientific Development Co. Scientific Glass & Instruments, Inc. Scientific Manufacturing Industries Techne Incorporated Arthur H. Thomas Co. United States Testing Co., Inc. Wilkens-Anderson Co. Zena Co.
Camag, Inc. Eastman Kodak Co. EG&G Inc., Technical Products Group Elektros Inc. E.O.C.O.M. GAF Corp., Chemical Div. Haber Instruments, Inc. Karl Heitz, Inc. Helena Laboratories Itek Corp. E. Leitz, Inc. LogEtronics, Inc. Macbeth Color & Photometry Div. Merix Chemical Co. Nuclear Products Co. Polaroid Corp. Polysciences, Inc. H. Reeve Angel & Co.. Inc. Sage Instruments Weston Instruments, Inc. Zeebac Inc. Carl Zeiss, Inc.
for spectroscopy (complete systems) Xenon Corp.
for kinetic spectrophotometry (complete systems) Xenon Corp.
sub-systems and components Avco Everett Research Lab., Inc. ILC Technology Kontes Unilux, Inc. Xenon Corp.
PHOTOMETERS aerosol and smoke
other
dust measuring
GCA/Precision Scientific Hydril Control Systems Div. Metex Corp. Patentrol Corp.
Bausch & Lomb, Inc., Analytical Systems Div. Controlled Atmosphere, Inc. E. I. du Pont de Nemours & Co., Inc. GCA Technology Div. Photomation, Inc. Research Appliance Co. Royco Instruments, Inc. Science Spectrum, Inc. WeatherMeasure Corp.
Dranetz Engineering Labs., Inc. Princeton Applied Research Corp. H. Reeve Angel & Co., Inc. Theta Instrument Corp.
PHOTOELECTRON SPECTROSCOPY ΑΕΙ Scientific Apparatus Inc. E. I. du Pont de Nemours & Co., Inc. Japan Spectroscopic Co., Ltd. McPherson Instrument Corp. ORTEC Incorporated Physical Electronics Industries, Inc. Tracor Northern, Inc.
PHOTOGRAPHIC EQUIPMENT — see also film, photographic Charles BeselerCo. S. Blickman, Inc.
178 LG AUGUST 1974
American Instrument Co. Bio-Cal Instrument Co. Calbiochem Controlled Atmosphere, Inc. Delta Scientific Corp. E. I. du Pont de Nemours & Co., Inc. Durrum Instrument Corp. Carlo Erba S.p.A. Gam Rad, Inc. Glenco Scientific, Inc. Joyce, Loebl & Co. Lockwood and McLorie Inc. Royco Instruments, Inc. Sanda, Inc. Schoeffel Instrument Corp. Science Spectrum, Inc. TCS Carl Zeiss, Inc.
American Ultraviolet Co. Anacon, Inc. Baird-Atomic, Inc. Beckman Instruments, Inc. Coleman Instruments Diano Corp. Durrum Instrument Corp. Edwards High Vacuum, Inc. EG&G Inc., Technical Products Group E.O.C.O.M. Gam Rad, Inc. Gamma Scientific, Inc. Gardner Laboratory, Inc. Hercules, Inc. Hunter Associates Laboratory, Inc. International Light, Inc. Joyce, Loebl & Co. Kahl Scientific Instrument Corp. Laser Optics, Inc. Leeds & Northrup Co. E. Leitz, Inc. Macbeth Color & Photometry Manufacturers Engineering & Equipment Corp. Walter C. McCrdne Associates, Inc. Oriel Corp. of America Photobell Co., Inc. Photovolt Corp. Photronic. Inc. Research Appliance Co. Rudolph Instruments Schoeffel Instrument Corp. Science Spectrum, Inc. Shimadzu Seisakusho, Ltd. SSR Instruments Co. Carl Zeiss, Inc.
fluorescence
E. I. du Pont de Nemours & Co., Inc. Gam Rad, Inc. GCA/Precision Scientific Humboldt Mfg. Co. Lovibond of America, Inc. Markson Science, Inc. Pro-Tech, Inc.
PHASE RESOLVER
reflectance
PHOTOLYSIS, FLASH
American Instrument Co. Bausch & Lomb, Inc., Analytical Systems Div. Controlled Atmosphere, Inc. E. I. du Pont de Nemours & Co., Inc. Gam Rad, Inc. GCA Technology Div. Intertech Corp. ITT Barton Photobell Co., Inc. Process & Instruments Corp. Research Appliance Co. Royco Instruments, Inc. Science Spectrum, Inc. The VirTis Co. WeatherMeasure Corp.
water determination equipment
flow type
flame Baird-Atomic, Inc. Coleman Instruments Corning Glass Works Corning Scientific Instruments A. Gallenkamp and Co. Ltd. Instrumentation Laboratory Inc. Process Analyzers. Inc. (Tex.) SSR Instruments Co. Technicon Industrial Systems G. K. Turner Associates Carl Zeiss, Inc.
flame, standards Baird-Atomic, Inc. Coleman Instruments Corning Scientific Instruments Instrumentation Laboratory Inc.
American Instrument Co. Baird-Atomic, Inc. Beckman Instruments, Inc. Biomed Instruments, Inc. Clifford Instruments, Inc. Coleman Instruments Controlled Atmosphere, Inc. Farrand Optical Co., Inc. Gamma Scientific, Inc. Kaltec Scientific Instrument, Inc. E. Leitz, Inc. Macbeth Color & Photometry Div. McKee-Pedersen Instruments ORTEC Incorporated Perkin-Elmer Corp. Photovolt Corp. Princeton Applied Research Corp. Rudolph Instruments Sanda, Inc. Schoeffel Instrument Corp. Shimadzu Seisakusho, Ltd. SSR instruments Co. TCS Technicon Industrial Systems G. K. Turner Associates C. N. Wood Mfg. Co. Carl Zeiss, Inc.
light scattering AeroVironment, Inc. Baird-Atomic, Inc. Bausch & Lomb, Inc., Analytical Systems Div. Controlled Atmosphere, Inc. Corning Glass Works Gam Rad, Inc. Gamma Scientific, Inc. GCA Technology Div. Hach Chemical Co. Humphreys Corp. International Light, Inc. Kahl Scientific Instrument Corp. Manufacturers Engineering & Equipment Corp. McKee-Pedersen Instruments Particle Data, Inc. Photobell Co., Inc. Photovolt Corp. Princeton Applied Research Corp. Process & Instruments Corp. Research Appliance Co. Royco Instruments, Inc. Rudolph Instruments Schoeffel Instrument Corp. Science Spectrum, Inc. Shimadzu Seisakusho. Ltd. SSR Instruments Co. Utopia Instrument Co. The VirTis Co. WeatherMeasure Corp. C. N. Wood Mfg. Co. Carl Zeiss, Inc.
micro American Instrument Co. EG^G'Inc,Technical Products Group EJectro Optical Industries, Inc. Farrand Optical Co., Inc. Gtemma Scientific, Inc. Hacker Instruments, Inc. Joyce, Loebl & Co. E. Leitz, Inc. Olympus Corporation of America Optronics International,- Inc. Rank Precision Industries Ltd., Analytical Div. Rank Precision Industries, Inc. Rudolph Instruments Sanda, Inc. Science Spectrum, Inc. SSR Instruments Co. TCS Carl Zeiss, Inc.
transmittance, filter type Aquatronics, Inc. Atago Optical Works Co.. Inc. Biomed Instruments, Inc. Bio-Technology Instruments Corp. Delta Scientific Corp. Edwards High Vacuum, Inc. EG&G Inc., Technical Products Group Glenco Scientific, Inc. Hach Chemical Co. Hunter Associates Laboratory, Inc. Intertech Corp. Joyce, Loebl & Co. Laser Optics, Inc. E. Leitz, Inc. Lektra Labs., Inc. Macbeth Color & Photometry Div. Oriel Corp. of America Rudolph Instruments Sanda, Inc. Schoeffel Instrument Corp. TCS Technicon Industrial Systems Carl Zeiss, Inc.
turbidity American Instrument Co. Anacon, Inc. Aquatronics, Inc. Baird-Atomic, Inc. Biomed Instruments, Inc. Coleman Instruments Delta Scientific Corp. E. I. du Pont de Nemours & Co., Inc. The Eppley Laboratory, Inc. Carlo Erba S.p.A. Gam Rad, Inc. Gardner Laboratory. Inc. Hach Chemical Co. Honeywell, Inc., Process Control Div. International Light, Inc. Kahl Scientific Instrument Corp. E. Leitz, Inc. McKee-Pedersen Instruments Monitor Technology, Inc. Particle Data, Inc. Photobell Co., Inc. Photovolt Corp. Photronic, Inc. Rudolph Instruments Sanda, Inc. Schoeffel Instrument Corp. Science Spectrum, Inc. Shimadzu Seisakusho, Ltd. TCS Ultra Dynamics Corp. Utopia Instrument Co. Carl Zeiss, Inc.
PHOTOGRAPHIC INTERPRETATION EQUIPMENT Antech, Inc. Joyce, Loebl & Co. Lektra Labs., Inc.
LABORATORY
GUIDE
PHOTOGRAPHIC INTERPRETATION EQUIPMENT POLARIMETERS Rank Precision Industries, Inc. Zena Co.
PHOTOSENSITIVE DEVICES
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Amperex Electronic Corp, DiEric Corp. EG&G inc., Technical Products Group EMR Photoelectric Farrand Optical Co., inc. Gamma Scientific, Inc. Gencom Div. Haber Instruments, Inc. Hamamatsu Corp. Harshaw Chemical Co., Crystal & Electronic Products Dept. Hewlett-Packard Co., (Calif.) International Light, Inc. Kahl Scientific Instrument Corp. Manufacturers Engineering & Equipment Corp. Medical Laboratory Automation, inc. PhotobeliCo., Inc. Photronic, Inc. RCA Electronic Components Schoeffet Instrument Corp. Scientech, Inc. Scientific Services Co. Sensor Technology, inc. Sigmatron, inc. SSR Instruments Co. Vactec, inc. Veeder-Root WeatherMeasure Corp. Westinghouse Electric Corp.
PILOT PLANT SYNTHESIS Autoclave Engineers, Inc. DeBell & Richardson, Inc. Lachat Chemicals, Inc. Polysciences, inc. Pressure Chemical Co.
PIPETS AND ACCESSORIES automatic Atomic Products Corp, Barnes Engineering Co. The Bellacour Co. BioQuest Brinkmann Instruments, Inc. Buchler Instruments Clay Adams Cole-Parmer Instrument Co, Corning Glass Works Custom Glassblowing Service Doerr Glass Co.
Fischer & Porter Co.
Fisher Scientific Co. A. Gallenkamp and Co. Ltd. Giison Medical Electronics, Inc. Glenco Scientific, Inc. Godax Laboratories Greiner Scientific Corp, ICN Isotope & Nuclear Div. International Applied Science Labs., Inc. Isoîab, Inc. Kahl Scientific instrument Corp. Kensington Scientific Corp. Kern Chemical Corp. Kontes Kontes/Martin, Inc. Kraft Apparatus, Inc. Lab Glass, Inc. Labindustries Lab-Items Associates Manostat Corp. Medical Laboratory Automation, Inc, Mercer Glass Works, inc. Micromedic Systems, Inc. MISCO Scientific National instrument Co., Inc.
Nuclear Equipment Chemical Corp,
Owens-Hîinots, Inc. Oxford Laboratories Patentroi Corp. Polytechnical Products Co. Profabo Quartz General Corp. Rochester Scientific Co. Schuco Schwarz/Mann Scientific Glass & Instruments, Inc. Scientific Industries, Inc, Scientific Manufacturing Industries SGA Scientific Inc. Sherwood Medical Industries, Inc, Technilab Instruments, Inc. Tekmar Co. Arthur H. Thomas Co. Tudor Scientific Glass Co. UnimetricsCorp. United Technical Corp. Utopia Instrument Co. Wheaton Scientific Zena Co.
180 LG AUGUST 1974
fillers, safety Atomic Products Corp. Bel-Art Products Bellco Glass, Inc. Black Light Eastern Curtin Scientific Co. Dynalab Corp. Fisher Scientific Co. ICN isotope & Nuclear Div. ICN Life Sciences Group Kontes/Martin, Inc. Manostat Corp. Nalge Co. National Instrument Co., Inc. Nuclear Equipment Chemical Corp. Pfeiffer Glass, Inc. Quartz General Corp,
glass Ace Glass, Inc. Atomic Products Corp. Beckman Instruments, inc. The Beilacour Co. Beilco Glass, Inc. Bio-Rad Laboratories Brockway Glass Co., Inc. Caîbiochem Carnag, Inc. Chatas Glass Co. Clay Adams Corning Glass Works Coulter Electronics, Inc. Curtin Scientific Co. Custom Glassblowing Service Dade Div. Demuth Glass Doerr Glass Co. Drummond Scientific Co. Dynalab Corp.
Fischer & Porter Co.
Fisher Scientific Co. Forma Scientific, Inc. A. Gallenkamp and Co. Ltd. HeIHge, Inc. ICN Isotope & Nuclear Div. ICN Life Sciences Group Kahl Scientific Instrument Corp. Kensington Scientific Corp. Kontes Kontes/Martin, Inc. Lab Glass, Inc. Labindustries Matheson Scientific Mercer Glass Works, Inc. Metro Scientific, Inc. MISCO Scientific Nuclear Equipment Chemical Corp, Owens-Illinois, Inc. Pfeiffer Glass, Inc. Precision Forming & Stamping Co.
Prolabo
Quartz General Corp. Rochester Scientific Co. Schuco Scientific Glass & Instruments, inc. Scientific Industries, inc. Scientific Manufacturing Industries Scientific Products SGA Scientific inc. Tudor Scientific Glass Co. U. S. Fused Quartz Co., Inc. VWR Scientific Wheaton Scientific
micro Ace Glass, Inc. Analtech, Inc. Atomic Products Corp. Baird-Atomic, Inc. Barnes Engineering Co. Beckman Instruments, Inc.
The Beliacour Co.
Beilco Glass, Inc. Bio-Rad Laboratories Brinkmann Instruments, Inc. Buchler Instruments Caîbiochem Camag, Inc. Chatas Glass Co. Clay Adams Cole-Parmer Instrument Co. Corning Glass Works Coulter Electronics, Inc. Curtin Scientific Co. Custom Glassblowing Service Dade Div. Doerr Glass Co. Drummond Scientific Co. Elkay Products, Inc. Fischer & Porter Co. Fisher Scientific Co. A. Gallenkamp and Co. Ltd. Roger Gilmont Instruments, Inc. Greiner Scientific Corp. Helena Laboratories ICN isotope & Nuclear Div.
International Applied Science Labs., Inc. Kensington Scientific Corp. Kontes Lab Glass, Inc. Labindustries Manostat Corp. Matheson Scientific Medical Laboratory Automation, Inc. Mercer Glass Works, Inc. Metro Scientific, Inc. Micromedic Systems, inc. MISCO Scientific Nuclear Equipment Chemical Corp. Owens-Illinois, Inc. Oxford Laboratories Pfeiffer Glass, Inc. Princeton Applied Research Corp. Prolabo Quartz General Corp. Quickfit Rochester Scientific Co. Schwarz/Mann Scientific Glass & Instruments, Inc. Scientific Giass Engineering Pty., Ltd. Scientific Industries, Inc. Scientific Manufacturing Industries Scientific Products SGA Scientific I nc. Tekmar CoTransidyne General Corp. Tudor Scientific Glass Co. Unimetrics Corp. United Technical Corp. Utopia Instrument Co. VWR Scientific Wilson Diagnostics, Inc.
plastic Ace Glass, Inc. Barnes Engineering Co. Beckman Instruments, Inc. Bel-Art Products BioQuest Bio-Rad Laboratories Caîbiochem Central Plastics Distributors Co. Curtin Scientific Co. Dynalab Corp. Elkay Products, Inc. General Scientific Equipment Co. Kaufman Glass Co. Kontes Kraft Apparatus, Inc. Lab Glass, Inc. MISCO Scientific Nalge Co. Owens-Illinois, Inc. Oxford Laboratories Patentroi Corp. Schuco Schwarz/Mann Scientific Glass & Instruments, Inc, W. S. Shamban & Co. Spectrum Medical Industries, Inc. Technicraft International, inc.
GCA/Precision Scientific General Scientific Equipment Co. Japan Spectroscopic Co., Ltd. Jersey Technical Electronics, Inc. Kahl Scientific instrument Corp. Kaltec Scientific Instrument, Inc. Kaufman Glass Co. Lab Glass, Inc. Modern Controls, Inc. Morgan industries, Inc. Pacific Transducer Corp. Rutherford Research Products Co. Scott Testers Shimadzu Seisakusho, Ltd. Testing Machines, Inc. Thermo-Electric Co.
PLASTICWARE Ace Glass, Inc. Bel-Art Products BioQuest Central Scientific Co. H. B. Chapman, Jr. & Co. Chempiast, inc. Curtin Scientific Co. Damon/I EC Div. Dynalab Corp. Elkay Products, Inc. Fisher Scientific Co. General Scientific Equipment Co. Hruden Laboratory Products Kaufman Giass Co. Lab Glass, Inc. Mallinckrodt Chemical Works. Science Products Div. Mallinckrodt Chemical Works, Plastics Div. Maryland Plastics, Inc. Microbiological Associates, Inc. MISCO Scientific Nalge Co. Nalgene Industrial Div. Owens-Illinois, Inc. Peel-A-Way Scientific Fred Portz Jr. Associates Scientific Glass S instruments, Inc. Scientific Products Scientific Specialties Service, Inc. W. S. Shamban S Co. Sherwood Medical Industries, Inc. Technicraft international, inc, Arthur H. Thomas Co. V Κ Enterprises, Inc. VWR Scientific Wheaton Scientific Wilson Diagnostics, Inc.
POLARIMETERS — see also spectropolarimeters automatic E. i. du Pont de Nemours & Co., Inc,
other Elkay Products, Inc. Patentroi Corp.
PLASTIC TAPE Atomic Products Corp. W. H. Brady Co. Cadillac Plastic & Chemical Co. Canrad-Hanovia, Inc. Central Plastics Distributors Co, Chemplast, Inc. Dixon Corp. Electronized Chemicals Corp. Fisher Scientific Co. The Fluorocarbon Co. Garlock, Inc. Kaufman Glass Co. Labeion Corp. Mallinckrodt Chemical Works, Science Products Div. Mallinckrodt Chemical Works, Plastics
Div. Permacel
Scientific Specialties Service, Inc. W. S. Shamban & Co.
Ercona Corp,
Japan Spectroscopic Co., Ltd. Perkin-Elmer Corp. Process & Instruments Corp. Rudolph Instruments Rudolph Research Carl Zeiss, Inc.
photoelectric Epic, Inc. Japan Spectroscopic Co., Ltd. Kernco Instruments, Inc, Perkin-Elmer Corp. Process & Instruments Corp, Rudolph Instruments Rudolph Research Carl Zeiss, Inc.
spectro, recording E. I. du Pont de Nemours & Co., Ercona Corp. Japan Spectroscopic Co., Ltd. Perkin-Elmer Corp. Rudolph Instruments Rudolph Research Varian Instrument Div.
PLASTIC TESTING EQUIPMENT
visual type
Bel-Art Products Fred S. Carver Inc. Central Plastics Distributors Co. Clay Adams Custom Scientific Instruments, Inc. Detroit Testing Laboratory W.C. Dt!lon& Co., inc. Galileo Corp. of America Gardner Laboratory, inc.
Atago Optical Works Co., Ltd. Central Scientific Co. Epic, Inc. Ercona Corp. Galileo Corp. of America instruments For Research & Industry Kernco Instruments, Inc. Perkin-Elmer Corp. PolyScience Corp,
LABORATORY GUIDE
POLARI METERS POWER SUPPLIES Rudolph Instruments Rudolph Research Carl Zeiss, Inc.
POLARISCOPES Bausch & Lomb, SOPD Div. Bethlehem Apparatus Co., Inc. Custom Glassblowing Service Ercona Corp. Gaertner Scientific Corp. Kinetic Systems, Inc. Pacific Transducer Corp. Polarizing Instrument Co., Inc. Rudolph Instruments Rudolph Research Wale Apparatus Co.
POLAROGRAPHIC EQUIPMENT AND ACCESSORIES Chemtrix, Inc. Environmental Sciences Associates, Inc.
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