EXPOSITION Exposition of Modern Laboratory Equipment—Cleveland Convention Center March 3 to 6, 1975, 9 a.m. to 6 p.m. The Exposition Is Open to All Interested Persons Without Charge
Acton Research Corp. Box 304, Acton, Mass. 01720. Α Ε Ι Scientific Apparatus Ltd. Barton Dock Rd., Urmston, Manchester M31 21D, England; in U.S.: 500 Executive Blvd., Elmsford, Ν. Y. 10523. Latest techni cal data on mass spectrometry and electron spectrometry. Aero Vac Products, Industrial Products Div., High Voltage Engi neering Corp. S. Bedford St., Burlington, Mass. 01803. Residual gas analyzers, mass spectrome ters, vacuum components. Ainsworth, Inc. 2050 S. Pecos, Denver, Colo. 80223. Analyt ical balances and weights. Air Products and Chemicals, Inc. P.O. Box 538, Allentown, Pa. 18105. Ultra high-purity and zero-grade gases, calibra tion standards, gas mixtures, gas handling equipment.
Airco 575 Mountain Ave., Murray Hill, N.J. 07974. Calibration gases; aluminum cylin ders; specialty gases; rare, ultra pure, and zero gases; pollution control and emission standards; radioactive gas mixtures and gas handling equipment and accessories; cur rent specialty gas catalog. Alltech Associates, Inc. 202 Campus Dr., Arlington Heights, III. 60004. Complete line of supplies and ac cessories for GC and HPLC; CTR columns: series of concentric chromatographic col umns for use of two different packings; glass capillary columns; cutting kits for Vi6-in. stainless-steel tubing; apparatus for capillary column filling; HPLC packings and columns. Alpha Analytical Laboratories 57 Freeman St., Newark, N.J. 07105. Cata log of standards, lab reagents, chemicals and pure materials; water and air pollution test kits, environmental analysis and mate rial testing and analysis services. Altex Scientific Inc. 1450 6th St., Berkeley, Calif. 94710. Highpressure liquid chromatographs, high-sen sitivity UV detectors, prepacked columns, analytical and preparative high-pressure valves and fittings, automatic sample injec tion valves, HPLC absorbents and pack ings. A m e r i c a n I n s t r u m e n t Co., D i v . Travenol Laboratories, Inc. 8030 Georgia Ave., Silver Spring, Md. 20910. Corrected spectra instrument; fluorocplorimeter; accessories for biochemical GC: glass drawing machine, macro columns treating stand, glass-path micro column holder; solid-state chloride titrator; DW-2 UV-VIS spectrophotometer; stopped-flow data acquisition system; rotary Kjeldahl; photon counter; SPF-1000, operates in cor rected excitation and emission mode, as ratio S P F , as double-beam spectrophotom eter.
A m e r i c a n Optical Corp., Scientific Instrument Div. Eggert and Sugar Rds., Buffalo, N.Y. 14215. StereoScopic, fluorescence, re search, and laboratory microscopes; photomicrographic equipment (automatic and semi); microspectrophotometer.
Applied Science Laboratories, Inc. P.O. Box 440, State College, Pa. 16801. Complete line of supplies for gas v liquid, and thin-layer chromatography as well as exotic lipids, drugs, fatty acids, pesticides, steroids, and isotope-labeled chemicals.
American Society for Testing and Materials 1916 Race St., Philadelphia, Pa. 19103. Books and periodicals relating to analytical chemistry, membership information.
6400 Westpark, 77027.
Analabs, Inc. Box 501, North Haven Conn. 06473. Analog Technology Corp. 3410 East Foothill Blvd., Pasadena, Calif. 91107. Electron-capture detectors, digital FID electrometers, chromatographic mem ory and display, quadrupole mass spec trometers. Analtech, Inc. 94 Lincoln St., Brighton, Mass. 02135. Analytical Instruments Develop ment Inc. Rt. 41 & Newark Rd., Avondale, Pa. 19311. Portable GC's with following detector op tion: flame ionization, flame photometric, thermal conductivity, and electron capture; portable and lab calibration equipment; portable ozone analyzer and calibrator; portable heated total hydrocarbon analyz ers, sample vaporizer for use with tube con centrator. Angstrom, Inc. P.O. Box 248, Belleville, Mich. 48111. Compact V-71 vacuum emission spectrom eter and computerized readout, excitation sources, lab disc mills, dual automatic fu sion apparatus, X-ray manganese determinator, induction remelt furnace for spectrochemical samples and spectrochemical accessories. Antek Instruments Inc. 6005 North Freeway, Houston, Tex. 77022. Series 300 chromatograph, Series 400 lowcost chromatograph, digital nanocoulometer, Model 650 automatic programmer for automation of laboratory and process gas chromatograph. Apollo Microwave Products P.O. Box 362, Crystal Lake, III. 60014. Mi crowave laboratory, moisture determina tion equipment. Applied Materials, Inc. 2999 San Ysidro Way, Santa Clara, Calif. •95051. Applied Research Laboratories 9545 Wentworth St., Sunland, Calif. 91040. QA 137 quantometric analyzer with a hand-held aerosol generator capillary arc (AC cap) for remote analysis; QA 137 with inductively coupled R F plasma source for analysis of solutions or solids; viscomatic MS automatic capillary viscometers; 750 liquid chromatograph; M P D 850 multiele ment analyzer for gas chromatography; QMAS 133000 quadrupole mass analyzer for solids.
Areas Co. Suite 300, Houston,
Tex.
A r t h u r H. T h o m a s Co. Third & Vine Sts., Philadelphia, Pa. 19105. Hitachi spectrophotometers; isotope Zeeman atomic absorption spectrometer; Mettler balances; Thomas specialities in cluding peak detection systems: 68, 80, and 260, big and small dipper (roto sampler), condirectivity meter, tape punch, stack sampler, Model 55 titrator, Model 241 printer/interface; OSHA and NIOSA ap proved personnel monitors; Kipp & Zonen flatbed recorders and Cahn microbalance (automatic). August Sauter of America, Inc. 80Fifth Ave., New York, N.Y. 10011. Com plete line of top-loading precision lab bal ances and single pan analytical balances; electronic weighing equipment that can print and calculate weighing information, includes memory units. Baird-Atomic, Inc. 125 Middlesex Turnpike, Bedford, Mass. 01730. Spectromet and Spectrovac optical emission spectrometers, Spectrocomp com puterized readout systems, spectrofluorometers. J . T . B a k e r C h e m i c a l Co. 222 Red School Lane, Phillipsburg, N.J. 08865. GC solvents, organics for analysis, mercury-free acids, safety packaging, Ultrex ultra high-purity products; "Baker Analyzed" reagents. B a r n e s Engineering Co. 30 Commerce Rd., Stamford, Conn. 06902. Glomax II demountable hollow cathode lamp system; Glowmax ETA-2 flameless atomizer; Multispec infrared analyzers; in frared sampling accessories including micro ATR and micro sampling systems. Barringer Research Ltd. 304 Carlingview Dr., Rexdale, Ont., Cana da M9W 5G2. Cospec II correlation spec trometer for dual-gas monitoring of SO2/ NO2; Cospec IV correlation spectrometer for single-gas, high-sensitivity measure ment of S 0 2 or NO2; heavy water liquid an alyzer. Baseline Industries, Inc. P.O. Box 2159, Applevalley Rd., Colo. 80540.
Lyons,
B a u s c h & Lomb Inc., Analytical Systems Div. 820 Linden Ave., Rochester, N.Y. 14625. Complete new line of low-cost UV-VIS spectrophotometers, reagent systems for water analysis, colorimeters, diffraction gratings, monochromators, refractometers, automated chemistry systems.
ANALYTICAL CHEMISTRY, VOL. 47, NO. 2, FEBRUARY 1975 · 187 A
EXPOSITION Beckman Instruments, Inc. 2500 Harbor Blvd., Fullerton, Calif. 92634. Digital pH meters, advanced UV and infrared spectrophotometers; complete display of lab instruments, accessories and supplies; Science Essentials Operations: strip chart recorders, Sartorius membrane filters, analytical balances, Ohaus toploading balances, magnetic stirrers, Lindberg lab furnaces, Barnstead glass stills, B. Braun water bath thermocirculators; New Dimensions: series of technical Audio/Visual (A/V) programs and complete production services for custom A/V programs. B e n d i x Corp., P r o c e s s I n s t r u m e n t s Div. P.O. Drawer 831, Lewisburg, W.Va. 24901. Complete line of gas chromatographs for research, control, and drug abuse screening; air monitors; health and safety instrumentation; process gas chromatographs with a digital programmer. B e t h l e h e m A p p a r a t u s Co., I n c . Front & Depot Sts., Hellertown, Pa. 18055. Swinger glass lathe, glass flowing, tools service, mercury cleaning equipment, mercury vacuum pick. Bio-Rad Laboratories 32nd & Griffin Ave., Richmond, Calif. 94804. HRLC ion-exchange resins and adsorbents; new line of well-designed economical chromatographic columns; 15 N, 13 C, 1 7 0 , 1 8 0 , and deuterated compounds; materials and equipment for electrophoresis including precast gel tubes and hollow fiber membranes for dialysis and concentration. B r a m m e r Standard Co. 214 Essex Knoll Dr., Coraopolis, Pa. 15108. Analytical standards: chemical and spectrograph^ from Brammer and foreign sources, including primary standards from British Bureau of Analysed Samples, Ltd., and the Iron and Steel Institute of Japan; ferrous and nonferrous standards including alloys of Fe, Al, Ni, Mg, Pb, Sn, Cu, Zn, and Co, ores, slags, ferroalloys; AA standards. Brinkmann Instruments, Inc. Cantiague Rd., Westbury, N.Y. 11590. Sartorius analytical top loading and electronic balances, Buechi rotary evaporators, Eppendorf micropipets and centrifuges, Brinkmann dispensers, Lauda circulators, Brinkmann instruments, Metrohm titrators, pH meters, recorders, probe colorimeters and diluters, curve tracing instruments. Brooks Instrument Div., Emerson E l e c t r i c Co. 407 W. Vine St., Hatfield, Pa. 19448. Dualelectronic flow controller, temperaturecompensating mechanical flow controller, electronic control for gas blending, dualcolumn GC flow control, flow controllers, regulators, flow meters, valves, calibrators, Glas-Tech GC columns. Bruker Scientific, Inc. 1 Westchester Plaza, Elmsford, 10523.
N.Y.
Buchler Instruments, Div. Searle Analytic, Inc. 1327 16th St., Fort Lee, N.J. 07024. Linear fraction collectors, Fracto scan, UV detectors and recorder, vortex evaporator, peristaltic action pump, preparative gel electrophoresis, programmable pump, analytical gel electrophoresis.
Burdick & Jackson Laboratories, Inc. 1953 South Harvey St., Muskegon, Mich. 49442. Highly purified solvents "distilled in glass" for GLC, UV-VIS, HPLC, IR, TLC; analytical reagents. Burrell Corp. 2223 Fifth Ave., Pittsburgh, Pa. 15219. Stanton analytical balances; TGA, DTA flammability instruments, B&L, AO, Unitron microscopes; Burrell gas analysis and wrist-action shakers. Cahn Instruments 16207 S. Carmenita Rd., Cerritos, Calif. 90701. R-100 recording balance, RG-2 new recording balance, 4700 new fully automatic balance. Carle Instruments Inc. 1141 East Ash Ave., Fullerton, Calif. 92631. Analytical gas chromatographs: demonstrations of new Model AGC-111H with hydrogen transfer system; all models of low-cost basic gas chromatographs; complete l..ie of valves and valve automation equipment for all GC applications. Chem Service, Inc. P.O. Box 194, 851 Lincoln Ave., West Chester, Pa. 19380. Availability of more than 5000 chemicals in small quantities in kits or individually for use as analytical standards; several new and expanded existing kits. Chemical Data Systems, Inc. RD 2, Box 74, Oxford, Pa. 19363. Model 800 reaction systems for rapid determination of kinetic parameters in gas-phase thermal and catalytic pulsed and continuous reactions; Model 1200 elemental analyzer/peak identifier for GC effluents; Model 820D controlled atmosphere pyrolysis system; Model 120 pyroprobe solids pyrolyzer with 1400° option and three-position function selector switch; Model 100 pyroprobe 1000° programmable solids pyrolyzer; Model 210 automatic temperature programmer with cryogenic capability, Model 200 multichannel temperature controller.
Commonwealth Scientific 500 Pendleton St., Alexandria, Va. 22314. Conference Book Service, Inc. P.O. Box 298, 705 Prince St., Alexandria, Va. 22314. Browsing library of current professional books. Contamination Control, Inc. Forty-Fort & Tomlinson Rds., Kulpsville, Pa. 19443. Coulter Electronics 590 W. 20th St., Hialeah, Fla. 33010. C r a w f o r d F i t t i n g Co. 29500 Solon Rd., Cleveland, Ohio 44139. CRC Press, Inc. 18901 Cranwood Parkway, Cleveland, Ohio 44128. "Atlas of Spectral Data & Physical Constants for Organic Compounds," 2nd éd., over 21,000 compounds; "Handbook of Spectroscopy," "Critical Reviews in Analytical Chemistry," many other pertinent titles. Curtin Matheson Scientific P.O. Box 1646, Houston, Tex. 77001. CVC Products, Inc. 1775 Mt. Read Blvd., Rochester, 14603. Low cost GC/MS.
N.Y.
Datametrics 340 Fordham Rd., Wilmington, Mass. 01887. High-accuracy pressure, vacuum, flow and fluid velocity measurement and transducing systems; digital indexing and data retrieval systems; automatic data scaling and ratio calculations; transducer-data intercoupling systems for computer input, data logging, or automatic control; programmable logic controllers for automating analytical instrumentation systems. Denco Research 3192 N. Longhorn, Tucson, Ariz. 85715. D i a n o Corp., I n d u s t r i a l X - r a y D i v . 2 Lowell Ave., Winchester, Mass. 01890. Automatic X-ray diffractometer, automatic X-ray vacuum spectrometer.
Digilab, Inc.
Chemir Laboratories 761 W. Kirkham Ave., Glendale, Mo. 63122. IRGO: an infrared spectrum identification system by time-shared computer search of 150,000 reference spectra.
237 Putnam Ave., Cambridge, Mass. 02139. Fourier IR spectrometers, research level, high-resolution Model FTS-15 and the routine, low-cost "laboratory workhorse," Model FTS-10.
Chemtrix Inc. 135 N. Adams St., Hillsboro, Ore. 97123. pH, oxygen, and conductivity meters; colorimeters; specific ion probes.
D i g i m e t r i c Co. 730 Kalamath St., Denver, Colo. 80204. Electronic balances and systems.
Chromalytics Corp. Rt. 82, Unionville, Pa. 19375. Microwave emission spectrophotometric detector, a tunable, specific element detector for all GC's; MC-2 mass chromatograph for molecular-weight determinations; MP-3 thermal chromatograph; chromalytics concentrator, a precolumn concentrator for GC's.
Digital Equipment Corp. 146 Main St., Maynard, Mass. 01754. D o h r m a n n Div., Envirotech Corp. 3240 Scott Blvd., Santa Clara, Calif. 95129.
Clifford Instruments, Inc. 189 Oak St., Natich, Mass. 01760. Fluor/ reflec/trans/fluor quench scanning densitometers for electrophoresis and TLC quantitation.
D u P o n t Co., I n s t r u m e n t P r o d u c t s 1007 Market St., Wilmington, Del. 19898. Mass spectrometers, MSID, data systems; electron spectrometer (ESCA); liquid chromatography systems and packings; thermal analysis systems; moisture instrumentation; luminescence biometer for measuring biomass; pollution monitoring; seminar.
Columbia Scientific Industries P.O. Box 6190, Austin, Tex. 78762. Economy digital integrator for GC and LC: mini lab integrator, mass spectrometer data system, thermal analyzers, portable X-ray analyzers.
DuMont Electron Tubes & Devices Corp. 750 Bloomfield Ave., Clifton, N.J. 07015. Photomultipliers, cathode ray tubes, infrared pyroelectric vidicon, photomultiplier housings.
188 A · ANALYTICAL CHEMISTRY, VOL. 47, NO. 2, FEBRUARY 1975
EXPOSITION Durruin Instrument Corp. 3950 Fabian Way, Palo Alto, Calif. 94303. Series D-100 rapid kinetics spectrophotom eter. Ε & L Instruments, Inc. 61 First St., Derby, Conn. 06418. Electron ic circuit designing equipment, digital elec tronics training equipment, breadboarding equipment and supplies. E a s t m a n K o d a k Co. 343 State St., Rochester, Ν. Υ. 14650. Thinlayer chromatography products, liquid scintillation counting reagents, photo graphic products for emission spectrography, autoradiography and other scientific photographic applications. Eberbach Corp. P.O. Box 1024, Ann Arbor, Mich. 48106. Electroanalyzer, mercury cathode appara tus, ultra-speed electroanalyzer, shaker baths, stirrers, magnetic stirrers, Waring Blendors. Electrothermal Ltd. Ill West Industry Ct., Deer Park, N.Y. 11729. Laboratory heating equipment, sci entific instruments, heating tapes and cords. E l s e v i e r S c i e n t i f i c P u b l i s h i n g Co. 52 Vanderbilt Ave., New York, N.Y. 10017. Latest books and journals available from Elsevier, North Holland, and American El sevier Publishing Co.; Benninghoff, "Index of Chemicals." EM Laboratories, Inc. 500 Executive Blvd., Elmsford, N.Y. 10523. Products for chromatography: TLC,
HPLC, sorbents and prepacked columns; solvents for spectroscopy: NMR, UV, ana lytical reagents and laboratory specialties including ultra pure salts, nonbleeding pH paper, liquid concentrates, biochemicals. Encyclopaedia Britannica, Inc. P.O. Box 6739, Chicago, III. 60680. All new 1975 edition of "Encyclopaedia Britannica 3," "The Britannica Junior," and other re lated products. Environmental Sciences Assoc, Inc. 175 Bedford St., Burlington, Mass. 01803. Model 3010 trace metals analyzer for rapid repetitive analysis of trace metals in a wide variety of matrices; chemical system which precludes any sample preparation on many matrices; standard line of anodic stripping voltammeters and reagent cleaning system. Seminar.
Extranuclear Laboratories, Inc. 250 Alpha Dr., P.O. Box 11512, Pittsburgh, Pa. 15238. Gas chromatograph/mass spec trometer computer system modulars for atomic molecular beam detection, Spectramass 80. F a r r a n d O p t i c a l Co., I n c . 117 Wall St., Valhalla, N.Y. 10595. Fully corrected spectrofluorometer MK 1 with excitation and emission correction mod ules, VIS-UV-2 thin-layer chromatogram analyzer with new electronic ratio compu tation, ratio fluorometer-2, new line of ac cessories such as dewar assembly, beam in tensifier assembly; fluorometers: three-cell carrier and quick mix assembly. Finnigan Corp. 845 W. Maude, Sunnyvale, Calif. 94086. F series gas chromatograph/mass spectrome ter with integrated data system, QM900A energy-dispersive X-ray spectrometer au tomated materials analysis system.
Eocom Corp. 19722 Jamboree Blvd., Irvine, Calif. 92664. FMS-7200 toxic gas analyzer: Fourier mul tiplex spectrometer for multicompound trace level, computer-controlled infrared interferometer spectrometer systems for industrial air monitoring; Eocom/Bruker IFS-115 Fourier multiplex spectrometer system: incorporates IR interferometer modulator of high resolution.
F i s c h e r & P o r t e r Co. E. County Line Rd., Warminster, Pa. 18974. Rotameters for analytical instru ments, chromatography apparatus, cus tom-made glassware for the OEM, vacuum and pressure apparatus, low flow control valves.
Etec Corp. 3392 Investment Blvd., Hayward, Calif. 94545. Scanning electron microscope and X-ray accessories, electron microprobe, Biosem, Vista scan, and computerized SEM X-ray data handling system.
F i s h e r S c i e n t i f i c Co. 711 Forbes Ave., Pittsburgh, Pa. 15219. Atomic absorption spectrophotometers, gas chromatographs, thermal analytical instru mentation, automated chemistry systems, pH meters and electrodes, reagent chemi cals, laboratory appliances.
THE PARR9 ACID DIGESTION BOMB The rapid and safe way to dissolve inorganic samples in HF, HC1 or HNCb, or to digest organic materials in strong alkalis or oxidizing acids with complete sample recovery.
Very large sample compartment sa Easy pushbutton operation Measures CD or PM vol,a voltage % ^ r ^ _ 9 on same chart Photo (piezo) elastic modulator ^^ versio version also available ^
^
JASCO Model J-40 Spectropolarimeter measures circular dichroism from either 185 to 700 nm or 185 to 1000 nm with high resolution and extreme sensitivity. Optional attachments make measurement and data processing extremely simple. MCD and Low Temperatu and micro accessories available.
Samples are held in a 25 ml, thick walled Teflon* cup which is not attacked by the acid charge. This cup is confined within a sturdy stainless steel bomb from which it is easily removed for sample recovery and washing. No wrenches or clamps are needed to produce a tight seal. Ask for PARR Bulletin 4745 describing this rapid method for dissolving difficult samples. *duPont TFE flurocarbon resin.
For complete details, please call or write:
JASCO I N C O R P O R A T E D Meeting House Cove Bozman, Maryland 21612 (301)822-1220
PARR INSTRUMENT
COMPANY
211 F i f t y - T h i r d St.
M o l i n e , I I I . 61265
CIRCLE 137 ON READER SERVICE CARD 190 A · ANALYTICAL CHEMISTRY, VOL. 47, NO. 2, FEBRUARY 1975
(309)
762-7716
CIRCLE 194 ON READER SERVICE CARD
EXPOSITION ALTEX Model 300 Liquid Chromatograph
analytical and preparative HPLC in one instrument Providing performance, reproducibility and convenience standards far beyond its low initial cost.
Fluid Metering, Inc. 48 Summit St., Oyster Bay, N.Y. 11771. Line of valveless, variable and reversible metering pumps, positive displacement, chemically resistant, repeat accuracy to 0.1%, flow rates from 0-1000 ml/min, pres sure to 100 psig. Franklin G N O Corp. Box 3206, West Palm Beach, Fla. 33402. F T S Systems, Inc. P.O. Box 158, Stone Ridge, N.Y. 12484. Re mote mechanical refrigeration systems to -100°C and high capacity of 1700 Btu at —70°C; ultra low-temperature chambers to —130CC; new line of freeze-dryers with ca pacities from 0.5 to 5 liters of water and condenser temperatures to —130°C. GCA/McPherson Instrument 530 Main St., Acton, Mass. 01720. Photoelectron spectrometer (ESCA36), UV-VIS spectrophotometer, double monochromator and programmable control system, highresolution scanning monochromator, repli ca mirrors and optical surfaces. G e l m a n I n s t r u m e n t Co. 600 S. Wagner Rd., Ann Arbor, 48106.
Mich.
G e n e r a l E l e c t r i c Co. Nuclear Technology and Applications Op eration, Vallecitos Nuclear Center, Pleasanton, Calif. 94566. Laboratory equipment: inert gas dryer. G e n e r a l E l e c t r i c Co. 930 Western Ave., Lynn, Mass. 01901. Compact, lightweight hydrogen generator for users of gas chromatographs, flame ion ization detectors and related equipment, which require an on-site, on-demand source of high-purity hydrogen. General Valve Corp. 110 Route 10, E. Hanover, N.J. 07936. GEOS Corp. 420 Fairfield Ave., Stamford, Conn. 06902. Complete line of grinding and sieving equipment to meet almost any require ment; Analyst 3/o for micromilling and/or sieving to 5 μ; Pulverit 5 planetary ball mill; Pulverit 16 plastics mill for grinding all plastics without external cooling.
• Flow rates 0.1 ml to 100 m l / min. • 3000 psi operation • Sensitivity 0.005 AUFS Complete brochure free upon request
ALTEX SCIENTIFIC, INC.
1450 Sixth Street / Berkeley, CA 94710 (415)525-5500
Giangarlo Scientific Co. 3237 Dawson St., Pittsburgh, Pa. 15213. Portable emission spectroscope, beta counting Berthold TLC scanner, H2S and total sulfur analyzers, CHN+O analyzers, H2 in metals analyzers, NO, NO* + ozone analyzers, metal sample cutting and pol ishing equipment, air monitoring instru ments, thermotitrator. G i l f o r d I n s t r u m e n t Labs., I n c . 132 Artino St., Oberlin, Ohio 44074. Com plete line of UV-VIS spectrophotometers and accessories for science and industry. Gilson Medical Electronics, Inc. P.O. Box 27, Middleton, Wis. 53562. Auto matic diluter, dispenser, peristaltic pumps, hand pipeters, automatic liquid sample changers, fraction collectors, gradient for mer, and UV column monitor. Glenco Scientific, Inc. 2802 White Oak Dr., Houston, Tex. LC col umns, fittings, valves, accessories; UV-VIS detectors; colorimeters; syringes; reagent dispensers.
CIRCLE 7 O N READER SERVICE CARD
192 A · ANALYTICAL CHEMISTRY, VOL 47, NO. 2, FEBRUARY 1975
GO I n c . 11940 E. Washington Blvd., Whittier, Calif. 90606. Pressure regulators, filters and flow controls. G o w - M a c I n s t r u m e n t Co. 100 Kings Rd., Madison, N.J. 07940. New liquid chromatograph, gas chromato graphs, portable gas analyzers, thermal conductivity detectors, flame ionization de tector, gas density detectors, filaments, thermistors, gas leak detectors. H a a k e Inc., T.C.E. D i v i s i o n 244 Saddle River Rd., Saddle Brook, N.J. 07662. Water and oil baths, refrigerated and heating thermal liquid baths and cir culators, viscometers. Hamamatsu Corp. 120 Wood Ave., Middlesex, N.J. 08846. Photomultiplier tubes, phototubes, silicon detectors, vidicons, D2 lamps, measuring video systems, IR detectors and other pho tosensitive devices. H a m i l t o n Co. P.O. Box 17500, Reno, Nev. 89510. H a n d y & H a r m a n T u b e Co. Whitehall Rd. & Township Line Rd., Norristown, Pa. 19404. Chromât ID capillary tubing in stainless steel and nickel for GC columns; Li-Chroma tubing in stainless steel for use in LC. Harrick Scientific Corp. Box 867, Croton-Dam Rd., Ossining, N.Y. 10562. UV-VIS-IR spectrometer attachments and accessories for internal reflection spectroscopy, fluorescence, specular reflection and transmission; beam condensers for microsampling; precision demountable liquid cells; optical windows and precision optical elements; plasma cleaner for ashing and ultra clean surfaces; rapid scan spectrometer (1000 spectra/sec) for UVVIS-NIR; double-beam goniometer spectrometer. H a r s h a w C h e m i c a l Co. 1945 E. 97th St., Cleveland, Ohio 44106. R. J . H a r v e y I n s t r u m e n t C o r p . 123 Patterson St., Hissdale, N.J. 07642. IR accessories: universal sample holder, quick press, variable pathlength IR gas cell, gas liquid permeation IR cell, desiccator, crystals; GC: volatilizer, gas-liquid permeation cell (gas and/or liquid), gas-liquid moisture vapor transmission apparatus, bottle permeation cell for gas or moisture studies; oxidizer; portable-slip-laminate-tensite test device; blood chemistry hematology instrument; programmed peristaltic reagent dispenser (5-channel). Heat Systems-Ultrasonics, Inc. 38 East Mall, Plainview, N.Y. 11803. Sonifier cell disrupter and homogenizer; laboratory cleaners; pipet and glassware cleaners; spectrophotometer cells; Mystaire scrubber for removal of most difficult fumes, odors, and submicron particles; sprays. Hewlett-Packard Route 41, Avondale, Pa. 19311. Gas chromatographs, integrators, lab data systems, liquid chromatographs, gas chromatograph/mass spectrometer/data systems, specialized chromatographic analyzers, desktop and hand-held calculators and plotters. I B M Corp. 1133 Westchester Ave., White Plains, N.Y. 10604.
DIGI-SCAN A scanning polarographic analyzer that provides a «DIGITAL READOUT" for organic and inorganic trace analysis
fc· ΊΓ
PEAK CAPTURE: Maximum current is digitally displayed and held · There are no meters to read • There are no recording charts that require interpretation. FAST: Scanning readout results are completed in 60 seconds or less on most analyses. SIMPLE: Only three switches operate the instru ment. Ideal for rapid repetitive analysis. TWO MODELS AVAILABLE: Two electrode model and three electrode model for high resistance solution analysis. RECORDER OUTPUT: Recorder jacks are built in for polaro graphic recordings. ELECTRONICS: All solid state. VOLTAGE RANGE: Adjustable from 0 to -3.0 V DIGITAL RANGE: 20 micro amps, or 2 micro amps, full scale with .1 micro amp. or .01 micro amp. readability. SENSITIVITY: Low parts per million. COST: Low operating cost per sample. ORDER INFORMATION: 950503 Digi-Scan (two electrode model) without electrodes, or cell, or stand. Please see 950601 for hanging drop electrode assembly. 950604 Digi-Scan (three electrode model) without electrodes, or cell, or stand. Please see 950602 for hanging drop three electrode assembly.
INSTRUMENT DIVISION HEATH INTERNATIONAL, INC.
33737 - 32 Mile Road Richmond, Michigan 48062 Phone (313) 727-3665
EXPOSITION Inax Instruments Ltd. P.O. Box 6044, Stn. J, Ottawa, da K2A IT 1.
Ont..•Cana
Instrumentation Laboratory, Inc. 113 Hartwell Ave., Lexington, Mass. 02173. Models 151 and 251 atomic absorp tion spectrophotometers and Model 455 flameless atomizer. International Pammcorp. Four Β St., Burlington, Mass. 01803. Stu dent spectroscopy laboratory: undergrad uate teaching of modern instrumental anal ysis; NMR, ESR, NQR, microwave spec trometers and associated hardware and software. International Plasma Corp. 25222 Cypress Ave., Hayward, Calif. 94544. Low-temperature ashing equipment with accessories, fully automatic asher, with large 8-in. diam 1-ft long ashing chamber made of quartz, for fast Freon ashing of large samples.
Jeol USA, Inc. 235 Birchwood Ave., Cranford, N.J. 07016. Johns-Manville Greenwood Plaza, Denver, Colo. 80217. J o i n t C o m m i t t e e o n P o w d e r Diffraction Standards 1601 Park Lane, Swarthmore, Pa. 19081. Powder diffraction file. Joyce-Loebl Instruments 20 South Ave., Burlington, Mass. 01803. Disc centrifuge submicron particle size analyzer, gives absolute particle size distribution curves for particles in range 0.01-30 μ. Kevex Corp. 898 Mahler Rd., Burlingame, Calif. 94010. XES (X-ray energy spectrometer), nonde structive and simultaneous analysis of ele ments; applications: quality control, forensics, pollution, medical tissue analysis, mi croanalysis, qualitative and quantitative.
International Scientific Communi cations, Inc. 808 Kings Highway, Fairfield, Conn. 06430. Current and past issues of maga zines, literature display of laboratory in strumentation and equipment.
Kewaunee Scientific Equipment Corp. Adrian, Mich. 49221. Metal laboratory fur niture, perchloric acid fume hood, undercounter laboratory glassware washer-dryer, controlled-atmosphere dry box, fume hood exhaust fan.
International Scientific Instru ments, Inc. 1400 Stierlin Rd., Mountain View, Calif. 94043. Mini-rapid scan first desk top "TV scan mode" SEM priced under $10,000, mini-SEM MSM-5, table top SEM with 200 Â resolution and priced under $17,000, super mini-SEM first 100 Â resolution SEM priced at $23,100.
K o n t e s G l a s s Co. Spruce St., Vineland, N.J. 08360. Kontes/ Quantum TLC plates and systems, Kontes/ Martin solvent recovery apparatus, Kontes/Martin cryogenic systems, Kontes TLC densitometer, Kontes base line cor rection device, Kontes calculating integra tor, chromatographic supplies and accesso ries.
IRGO-STSI (Singer Technical Services, Inc.) Chemir Laboratories 761 W. Kirkham Ave., Glendale, Mo. 63122. IRGO, an infrared spectrum identification system by time-shared computer search of 150,000 reference spectra.
Kraft Apparatus, Inc. 402 Sagamore Ave., Mineola, N.Y. 11501. Test tube rack rotator; separatory funnel rack; liquid column controls to add buffers, warn of low-column level, operate valves, etc.; two sizes of high-speed nonaerating stirring for resuspending cells with three possible motor drives; media dispenser; label printer.
ISCO P.O. Box 5347, Lincoln, Neb. 68505. Highperformance liquid chromatographs, LC detectors, fraction collectors, low- and high-pressure metering and gradient pumps, pressure monitoring devices, parked columns. J a n o s Optical Corp. Route 35, Townshend, Vt. 05353. Infrared accessories, optical material, glass, fused silica, Ge, Si, salts, halites, and all exotic material for the UV including ZnSe; IR crystals, lenses, and large IR laser optics. J a r r e l l - A s h Div., Fisher Scientific Co. 590 Lincoln St., Waltham, Mass. 02154. Inductively coupled plasma computer-controlled AtomComp for trace metal analysis; computer-controlled vacuum AtomComp with electronic-controlled waveform excitation; digital comparator microphotometer; modular 0.25-m monochromator system set up as fluorometer; 0.5-m Ebert monochromator with camera; precision-ruled gratings and replicas. Jasco, Inc. Meeting House Cove, Bozman, Md. 21612. Model J40A CD spectropolarimeter, Model J40 DP data processor, Model FP4 fluorescence spectrophotometer, Model NIA-1 nitrogen-15 analyzer, Models IRA-1 and IRA-2 IR spectrophotometers.
CIRCLE 124 ON READER SERVICE CARD 194 A · ANALYTICAL CHEMISTRY, VOL. 47, NO. 2, FEBRUARY 1975
Labconco Corp. 8811 Prospect Ave., Kansas City, Mo. 64132. Fume hoods, safety enclosures, lab carts, glassware washers, freeze-dry equip ment. Lab-Crest Scientific Div., Fischer & P o r t e r Co. County Line & Warminster Rd., Warmin ster, Pa. 18974. Variable-area flow meters, chromatography apparatus, custom glass ware, vacuum and pressure apparatus, lowflow control valves.
Labindustries 1802 Second St., Berkeley, Calif. 94710. Precision dispensers and diluters to fit any size container including carboys; Karl Fischer water determination aquametry apparatus; test tube shaker with accesso ries; micropipets; new developments to en hance the versatility and accuracy of Repi pet dispensers and Repipet diluters, all plastic dispensers and sampling systems, other precision instruments. Laboratory Data Control P.O. Box 10235, Riviera Beach, Fla. 33404. Variable wavelength UV/VIS spectropho tometer for HPLC; 5000 psig constant flow, pulsation-free solvent pumping system for HPLC; two-pen potentiometric strip chart
EXPOSITION recorder; complete line of Cheminert prod ucts: chemically inert valves, columns, pumps, fittings, and injectors for chroma tography; complete line of monitors, pumps and accessories for HPLC.
Lear Siegler, Inc. 1 Inverness Dr. E., Englewood, Colo. 80110. SM401 laboratory derivative spec trometer, SM700 process analyzer, SM1000 series of ambient air monitors.
Laboratory Equipment 20 Community Place, Morristown, N.J. 07960. Publications serving the laboratory field.
Leco Corp. 3000 Lakemew Ave., St. Joseph, Mich. 49085. Silicon detn., portable manganese detn., acid detn. for nitric/hydrofluoric pickling bath, phosphorus detn., direct reading IR sulfur detn. for coal and coke, complete instrumentation for detn. carbon, sulfur, oxygen, hydrogen, nitrogen in met als and other materials; metallographic sample preparation equipment and supplies; metallurgical microscopes.
Labtest Equipment Co. 11828 LaGrange Ave., Los Angeles, Calif. 90025. New Model 2100 direct reading spectrometer with CRT readout/printout, X-ray fluorescence polychromator, new Model 1000 dedicated computer readout systems to update and modernize existing spectrometers. Lake Shore Cryotronics, Inc. 9637 Sandrock Rd., Eden, N.Y. 14057. Model SLC-1A liquid nitrogen level con troller featured with live demonstrations; carbon glass resistor cryogenic thermome ter, silicon and GaAs diode sensors, and other cryogenic and higher temperature range thermometry; cryogenic controllers, temperature programmers, and digital thermometers. Laser Energy, Inc. 320 N. Washington St., Rochester, 14625.
N.Y.
L e e d s & N o r t h r u p Co. Sunneytown Pike, North 19454.
Wales,
Pa.
E. L e i t z , I n c . Rockleigh Industrial Park, Rockleigh, N.J. 07647. Lightener Instrument Co. 431 West Market St., West Chester, Pa. 19380. Automatic thin-layer analytical sys tem (Atlas). Linde Div., U n i o n Carbide Corp. 270 Park Ave., New York, N.Y. 10017. Ap paratus, molecular sieves, special gas mixtures, gas analysis service.
There's only one truly automatic Karl Fischer titrator...Aquatestn. No standardization. No burettes. Direct Digital readout of water content. No computation. Just put in your sample, flip the switch, let it run, read the result. So simple.
Linear Instruments Corp. 17282 Eastman Ave., Irvine, Calif. 92705. Recorders, integrators, log-amp, auto-ex panders, accessories. Liquid Carbonic Corp. 135 S. LaSalle St., Chicago, III. 60603. LKB Instruments, Inc. 12221 Parklawn Dr., Rockville, Md. 20852. T h e L o n d o n Co. 811 Sharon Dr., Cleveland, Ohio 44145. pH meters, titration and pH stat systems, pH and selective ion electrodes, conductivity meters and electrodes, constant-tempera ture circulating and cooling water baths. Luft Instruments, Inc. Old Winter St., Lincoln, Mass. 01773. Electronic controller, programmable for automation of batch, sequential, and con tinuous operations; high-speed Karl Fisch er titrator, automatic burets. Mallinckrodt, Inc. P.O. Box 5439, St. Louis, Mo. 63147. Materials Consultants and Labora tories, Inc. 1567 Old Abers Creek Rd., Monroeville, Pa. 15146. Materials problem solving, re search and analytical services including SEM, TEM, X-ray, and electron diffrac tion, residual stress determinations, energy dispersive X-ray analysis, metallography, thermal and stress analysis, computer tech niques. Matheson Gas Products P.O. Box 85, E. Rutherford, N.J. 07073. General Catalog # 3 0 , Hydrox inert gas purifier, arsine monitor, flash arrestor, un abridged "Gas Data Book."
McKee-Pedersen Instruments P.O. Box 322, Danville, Calif. 94526. New digital polarographic analyzer (computer compatible), high-speed electrochemical cells for ASV, coulometry, and polarography; new MP-system modules: voltammetry controller, IC patch panel, scanning (computer compatible) monochromator, MP-system 1000 consisting of 40+ elec tronic and optical modules for methods de velopment, research, and teaching. Medical Laboratory Automation, Inc. 520 Nuber Ave., Mt. Vernon, N.Y. 10550. Precision pipeting systems, centrifuge, blood typing system, Electra coagulation timers.
Meloy Laboratories, Inc.
r
6715 Electronic Dr., Springfield, Va. 22151. Monitoring instruments for mea surement of SO2, Os, NO, N 0 2 , NO*, and hydrocarbons in ambient air, stack gases, and process streams. M e r c k & Co., I n c . / I s o t o p e s 126 E. Lincoln Ave., Rahway, N.J. 07065. NMR solvents, stable isotopes, carbon-13, labeled biochemicals.
PHOTOVOLT See us at Booth #1305 at the Pittsburgh Conference Get the whole story by writing today to Photovolt, 1115 Broadway, New York, Ν. Υ. 10010. Or phone (212) 989-2900. CIRCLE 197 ON READER SERVICE CARD 196 A · ANALYTICAL CHEMISTRY, VOL. 47, NO. 2, FEBRUARY 1975
Mettler Instrument Corp. Box 100, Princeton, N.J. 08540. Balances: electronic and mechanical; density, melting point, thermal analysis and titration in strumentation; data transfer equipment. M F E Corp. Keewaydin Dr., Salem, N.H. 03079. Digital tape and ticket printers, galvanometric and
EXPOSITION potentiometric strip chart records, X-Y recorders, digital cassette tape transports, scanning-torque motors, and graphic translators.
Integrated compact nitrogen-pumped dye laser, $9000 with wavelength range of 360-750 nm, includes grating sine drive for linear wavelength presentation.
MG Scientific 1100 Harrison Ave., Kearny, N.J. 07029.
Molecular D a t a Corp. 2869 Scarborough Rd., Cleveland Heights, Ohio 44118. New X-ray fluorescence analyzer and equipment, special X-ray monochromators, instruments, accessories, standards, research and development, consulting for analytical (XRF, XES, XRD, and single crystal XRD), industrial (inspection and environmental), and medical (diagnostic, therapeutic, and clinical) applications.
N e s l a b Instruments, Inc. 871 Islington St., Portsmouth, N.H. 03801.
Molecular Separations, Inc. P.O. Drawer E, Champion, Pa. 15622. Complete liquid chromatograph with injectors and gradient elution: columns and detectors.
Nicolet Instrument Corp. 5225 Verona Rd., Madison, Wis. 53711. Signal averagers, laboratory data systems, pulse Fourier NMR accessories for routine NMR spectrometers.
M o n r o e , T h e C a l c u l a t o r Co. 550 Central Ave., Orange, N.J. 07051. Model 1920 calculator for engineers, Model 1930 calculator for statisticians, Model 1860 programmable calculator, Model 300 input/output writer, Model 325/392 programmable calculator, Model 326/392 hand-held programmable calculator, Model 1350 calculator, Model 1330 calculator, Model 40 hand-held calculator, Model 344 statistical programmable calculator.
Norcon Instruments, Inc. 132 Water St., S. Norwalk, Conn. 06854. Model 201B high-performance GC identifier demonstrating nanogram sensitivity for GC peaks on-the-fly.
Micromeritics Instrument Corp. 5680 Goshen Springs Rd., Norcross, Ga. 30071. Refractometer and variable wavelength UV detectors for liquid chromatography, Model 7000 series high-speed liquid chromatographs, Digisorb 2500 automated gas adsorption analyzer, Sedigraph 5000 particle size analyzer, mercury penetration porosimeter, high-speed surface area analyzer. M i d w e s t I n s t r u m e n t Co., I n c . 612 Lake St., Box 206, Delafield, Wis. 53018. Disc and pin stream and sucker sampler, immersion sampler, ladle immersion furnace sampler, refractory sampling molds and various laboratory sampling and analysis supply items. 3MCo. 3M Center, Bldg. 224-BW, St. Paul, Minn. 55101. Molectron Corp. 177 N. Wolfe Rd., Sunnyvale,
Calif. 94086.
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1975
N a l g e Co., D i v . of S y b r o n C o r p . 75 Panorama Creek Dr., Rochester, N.Y. 14602. Separatory funnels, spin bars, widemouth wash bottles, clear graduated cylinders, beakers, straight side jars, pipets, work surface "Clean Sheets," laboratory notebooks, safety shields, hand-operated vacuum pumps. N a t i o n a l B u r e a u of S t a n d a r d s Admin. A640, Washington, D.C. 20234. Standard reference materials, publications ofNBS.
N o r t o n Co. P.O. Box 350, Akron, Ohio. 44309. Tygon flexible plastic tubing and connectors, lab mills, jars, and grinding media. Nuclide Corp. 642 E. College Ave., State College, Pa. 16801. Augmented Model DA/CS-1,2 dual flexible disc GC/MS automation system with Dynagraph high-speed, flicker-free raster type video output device; information on company's entire product line of mass spectrometers, GC/MS instruments, mass spectrographs, MS automation systems, MS components; and information on leasing. O r i e l C o r p . of A m e r i c a 15 Market St., Stamford, Conn. 06902. Complete line of hollow cathode lamps for atomic absorption analysis. Orion R e s e a r c h Inc. 11 Blackstone St., Cambridge, Mass. 02139. Continuous industrial effluent/process control monitors, new air monitors for inorganic species, complete line of specific ion electrodes and pH meters, new SS-22 serum calcium analyzers. Ortec, Inc. 100 Midland Rd., Oak Ridge, Tenn. 37830. TEFA 6110 tube excited fluorescence analyzer for qualitative and quantitative analysis, uses energy-dispersive fluorescence analysis for raw material evaluation, process monitoring, quality control, research, and medical/forensic investigation. P a c k a r d I n s t r u m e n t Co. 2200 Warrenville Rd., Downers Grove, III. 60515. Models 421, 419, and 417 GLC's and full range of accessories including attachments for radioisotope chromatography, also multichannel analyzers suitable for nondispersive X-ray spectroscopy. P a r r I n s t r u m e n t Co. 211 53rd St., Moline, III. 61265. Solution calorimeter for determining heats of reaction; oxygen bomb calorimeters with sample preparation bombs including acid digestion bomb, oxygen combustion bombs, sodium peroxide fusion bomb; laboratoryscale pressure reaction equipment.
EXPOSITION Particle Data, Inc. P.O. Box 265, Elmhurst, III. 60126. Particle counters, particle size analysis systems (computerized). Perkin-Elmer Corp. Main Ave., Norwalk, Conn. 06856. Analytical instrumentation including IR, AA, UV/ VIS, and NMR spectrophotometers; gas and liquid chromatographs; accessories; special purpose instruments; data systems. Perma Pure Products Box 70, Oceanport, N.J. 07757. Dryers, filters, sampling systems, humidity calierator and heatless dryers. Pharmacia Fine Chemicals Inc. 800 Centennial Ave., Piscataway, N.J. 08854. UV monitor, RI monitor, dual-wavelength UV photometer, potentiometric recorders (single and two change), peristaltic pump, electrophoresis apparatus, chromatographic columns, Sephadex gel filtration and ion-exchange media and affinity chromatography products. Philips Electronic Instruments, Inc. 750 S. Fulton Ave., Mount Vernon, N.Y. 10550. P W 1410/80 automatic X-ray spectrometer with EDAX energy-dispersive Xray analysis system and TV display output; XRG 3000 X-ray generator; PW 1316/90 automatic X-ray tube shield; EDAX IV system with wide-range stepping motor goniometer; powder and flat plate cameras and shutter control; wide range of Pye Uni-
cam liquid chromatographs, IR, UV/VIS, and AA spectrophotometry instrumentation. Photovolt Corp. 1115 Broadway, New York, N.Y. 10010. Karl Fischer titrator with completely automatic direct digital readout in micrograms of water; no standardization, no burets to read, and no computation necessary; new titration vessel with built-in spigot for easy draining of excess liquids; complete line of pH meters including digital display and expanded scale instruments, scanning densitometer with automatic integrator with digital printout for reading all electrophoresis media. Physical Electronics Industries, Inc. 6509 Flying Cloud Dr., Eden Prairie, Minn. 55343. Model 548 ESCA/Auger electron spectrometer, components for electron spectroscopy. P i e r c e C h e m i c a l Co. P.O. Box 117, Rockford, III. 61105. GLC/ LC mass spec reagents and accessories; amino acid and protein reagents and chemicals; clinical diagnostics; Corning biomaterial supports. Pitchford Industries Inc. 1901 Painters Run, Pittsburgh, Pa. 15241. Quantaspec vacuum X-ray spectrograph; on-line X-ray coating weight gauges, monitors for liquids and slurries; electric arc button remelt furnace; laboratory pulverizers; pica blender mill.
P l e n u m Publishing Corp. 227 West 17th St., New York, N.Y. 10011. New titles and series: "Treatise on Solid State Chemistry," Hannay, Editor; "Water—A Comprehensive Treatise," Franks, Editor; "The PMO Theory of Organic Chemistry," Dewar and Dougherty; "Digital Electronics and Laboratory Computers," Wilkins et al.; "Principles of Applied Clinical Chemistry," Natelson/Natelson; "Laboratory Instrumentation and Techniques," Ewing/Ashworth. Polyscience Corp. 6366 Gross Point Rd., Niles, III. 60648. Constant-temperature circulators, refrigerated chillers and coolers, stirrers, polarimeters, oscilloscopes, rotary vacuum evaporator, ovens, analytical standards, and publications. P o r t e r I n s t r u m e n t Co., I n c . P.O. Box 326, Township Line Rd., Hatfield, Pa. 19440. Flow meters, flow controllers for gases, flow controllers for liquids at high pressures, pressure gages, low flow module for analytical instruments. Praxis Corp. 5420 Jackwood, San Antonio, Tex. 78238. Model PR-103A pulsed NMR analyzer; measures liquid and solid content of industrial products, rapid and nondestructive, typical standard deviation of +10.1%, portable, solid-state digital plug in electronics for reliability; four pulse functions give versatility, "automatic mode" allows operation by nontechnical personnel.
GOW-MAC's New Liquid CHROMATOGRAPH is Complete for 951450. Consider Model 80-500. When you receive it you have the instrument, including pump, injection port, column and UV detector. The sensitivity is 0.01A, full scale. Fully guaranteed by GOW-MAC INSTRUMENT CO., of course.
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Telephone: 201/377-3450 Telex: 136331
Shannon Free Airport, Co. Clare, IRELAND Phone 61632 Telex: 6254 "See us at the Pittsburgh Conference, Booths £1309-1311" CIRCLE 87 ON READER SERVICE CARD
200 A · ANALYTICAL CHEMISTRY, VOL. 47, NO. 2, FEBRUARY 1975
EXPOSITION Precision Cells, Inc. 560 S. Broadway, Hicksville, N.Y. 11801. Spectrophotometer cells, quartz, glass, fused quartz products, disposable plastic cuvettes, IR and UV sampling accessories, cell washers, cell racks, photophysical stan dards, UV standards, gel cutters, rapid destainers, desalters, acrylophor.
Precision Gas Products, Inc. 681 Mill St., Rahway, N.J. 07065. Ultra high-purity gases and calibration gas mixtures, single and two-stage brass and stainless-steel regulators, gas syringes, leak detectors, gas purifiers, aerosol containers of calibration standards, cylinder-related hardware, mass flow meters and control lers, rotameters. Precision Sampling Corp. 8275 W. El Cajon Dr., P.O. Box 15119, Baton Rouge, La. 70815. Precision measur ing and dispensing devices for GLC and LC, microvalves, sample containers and closures, accessory items and automatic and semiautomatic sampling systems for GLC and LC. Princeton Applied R e s e a r c h Corp. P.O. Box 2565, Princeton, N.J. 08540. Electroanalytical instrumentation, automated and manual differential pulse voltammetric analyzers, controlled potential coulometric systems, corrosion measurement systems, electroanalytical accessories, potentiostats, programmers, digital coulometers; Model 162 (100 ps) dual-channel box car averager, Model 192 dual light chopper; Model 188 precision ratiometer, lock-in
amplifier, Model 1140 quantum photome ter, Model 1110 digital synchronous com puter; optical multichannel analyzer (OMA) with silicon vidicon for light detec tion from 200-1100 nm.
R e g i s C h e m i c a l Co. 8210 N. Austin Ave., Morton Grove, III. 60053. PMD (programmed multiple devel opment) instrument for TLC; reagents, kits, and accessories for GLC and HPLC.
Princeton Gamma-Tech P.O. Box 641, Princeton, N.J. 08540. Two portable chemical analyzers, Models XK-2 and XL-1; Model 100 chemical analyzer, Model 250 multielement chemical analyzer, Model 500 X-ray fluorescence spectrome ter.
R i g a k u / U S A , Inc. 607 North Ave., Wakefield, Mass. 01880. 3064 memory controlled X-ray spectrome ter; Portarix portable isotope X-ray fluo rescence analyzers; Miniflex table top Xray diffractometer; 2KW Geigerflex diffractometer; radiation safety apparatus.
Quantachrome Corp. 337 Glen Cove Rd., Greenvale, N.Y. 11548. Quantasorb sorption system; Monosorb surface area analyzer; null pycnometer for pure powder density.
Sadtler Research Laboratories, Inc. 3316 Spring Garden St., Philadelphia, Pa. 19104. Standard and commercial collec tions of reference spectra including in frared, NMR, UV, Raman, fluorescence, DTA; audiovisual programs on instrumen tal analysis and basic chemistry and math; technical books on chemistry and spectros copy; "Reactiones Organicae": documenta tion of useful organic reactions on slotted punch cards; hollow cathode lamps.
R a i n i n I n s t r u m e n t Co., I n c . 94 Lincoln St., Brighton, Mass. 02135. RCA Electronic Components, In dustrial Tube Div. 415 S. Fifth St., Harrison, N.J. 07029. Photomultipliers; integrated photodetection assemblies (IPA), includes photomultiplier and associated components in one com pact, economical package; GAAS and GAP photomultipliers for photon counting, as tronomy, and Raman spectroscopy. H . R e e v e A n g e l a n d Co., I n c . 9 Bridewell PL, Clifton, N.J. 07014. Readyto-use packings, columns, methods, and ac cessories for liquid chromatography, new family of prepacked and pretested and bonded 5-, 10-, 20-, and 40-μ columns for analytical and preparative LC, injection ports, fittings, etc.
S a g e I n s t r u m e n t s , Div., O r i o n R e search Inc. 11 Blackstone St., Cambridge, Mass. 02139. Complete line of peristaltic and sy ringe pumps for lab and biomedical use featuring 375A peristaltic pump with new servo speed control: constant flow even at low flow rates. S a r g e n t - W e l c h S c i e n t i f i c Co. 7300 N. Linder Ave., Skokie, III. 60076. Potentiometric recorders, spectrophotome ters, recording titrators, electrochemical equipment.
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CIRCLE 203 ON READER SERVICE CARD 202 A · ANALYTICAL CHEMISTRY, VOL. 47, NO. 2, FEBRUARY
1975
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Schoeffel Instrument Corp. 24 Booker St., Westwood, N.J. 07675. Con tinuously variable wavelength monitor for LC; chromatogram scanners, research and clinical models (TLC, TLE); accessories in clude computing integrator, printout and recorder interfacing; high-intensity lamp housings (arc and filament type); low-cost miniature grating and prism monochromators, new %-m high-intensity grating monochromator plus other monochromatic illu mination systems; and photodetection equipment. Science Supply N e w s (Markson Science, Inc.) 100 Fifteenth St., Del Mar, Calif. 92014. Science supply news publication, pH con ductivity meters and electrodes, laboratory organizers, colorimeters, UV spectro cells. Scientech, Inc. 5649 Arapahoe Ave., Boulder, Colo. 80303. Scientific Gas Products Inc. 513 Raritan Center, Edison, N.J. 08817. Ultra high-purity carrier and reference gases, high-accuracy gas mixtures, zerograde gases, and gas handling equipment. Scientific Glass Engineering Pty. Ltd. Ill Arden St., North Melbourne, Austra lia 3051. Microlitre syringes and sample in jectors for GC and LC; inlet and outlet splitters and splitless injection systems for GC, all-glass capillary and SCOT column systems, graphite high-temperature fer rules, all-glass molecular jet separators with GLT interfacing and micro cutoff valves. Scientific Glass & Instruments, Inc. P.O. Box 18306, Houston, Tex. 77023. 01dershaw distillation columns, magnetic stirrers, custom glassware, air pollution sampling equipment, lead and nonleaded gasoline analyzer, hydrometers, air and water pollution analysis glassware, pHmeters. Scientific Products 1430 Waukegan Rd., McGaw Park, III. 60085. UV-VIS, Grumman liquid handling, Leitz microscope, electronic balances, TLC, gamma counter, electrophoresis, water pollution control instrumentation, sundry new products. Scientific Research Instruments C o r p . , S u b s i d i a r y of G . D . S e a r l e & Co. 6707 Whitestone Rd., Baltimore, Md. 21207. Biospect—dual ΕΙ/CI quadrupole mass spectrometer—complete GC-MS computer system for analysis of biochemi cal and organic compounds; Medspect— medical mass spectrometer for continuous in-vivo analysis of respiratory, blood, or tis sue gases. Seiko Instruments, Inc. 2990 W. Lomia Blvd., Torrance, 90505.
Calif.
The Separations Group 8738 Oakwood, Hesperia, Calif. 92345. Vydac solid core material, adsorbent, re verse phase, anion exchange, cation ex change, polar-bonded phase; Vydac T P materials, adsorbent, reverse phase, anion exchange, cation exchange, polar-bonded phase. Shimadzu Seisakusho Ltd. Suite 202, 8121 Georgia Ave., Silver Spring, Md. 20910. Gas chromatograph GC-6A series and automatic sample injec tor AOC-6; gas chromatography GC-6AM series with unitized injection port and de tector in a cartridge; computing integrator
Chromatopack-IA; glass drawing machine and accessories for glass capillary column applications, GC's 5A, 4B, 4BM series. Shrader Analytical & Consulting Laboratories 3450 Lovett Ave., Detroit, Mich. 48210. Analytical and consulting services, includ ing gas chromatography, high- and low-res olution mass spectrometry, GC-MS, nucle ar magnetic resonance spectrometry. Siemens Corp. 186 Wood Ave., S., Iselin, N.J. 08830. S i r H o w a r d G r u b b P a r s o n s & Co., Ltd. Walkergate, Newcastle upon Tyne, En gland NE6 2YB. Infrared gas analyser Model 20 for botanical measurements; IR gas analyzer MED 1A (medical); optical fil ters for visible and IR; chemiluminescence gas analyser, Chemitox. Spectrametrics, Inc. 204 Andover St., Andover, Mass. 01810. Spectrascan systems: plasma spectrometers for atomic analysis. Spectrex 3594 Haven Ave., Redwood City, Calif. 94063. Vreeland direct reading spectro scope for quantitative spectrochemical analysis; electronic gas sampling pump, laser particle counter. Spectro Products Inc. 385 State St., North Haven, Conn. 06473. Model HG-2 mercury analyzer, Model MS-1 automatic still, oil spill sampling ap paratus, photometric amplifier, hollow cathode lamp power supply, Union Carbide spectroscopic electrodes and graphite supplies, lubricating oil analysis equip ment. Spectrogram Corp. 385 State St., North Haven, Conn. 06473. Miniglow demountable hollow cathode lamp, Cathaquant glow discharge system, oil detection apparatus. Spectrotherm Corp. 3040 Olcott St., Santa Clara, Calif. 95051. Model ST-10 high-speed, double-beam, fast Fourier transform IR spectrometer system in tandem with a GC; detects and displays full IR spectrum of less than 100 ng of GC effluents in 2 sec; Model 800 in dustrial IR thermograph featuring high resolution and video storage of thermal im ages. Spectrum Scientific 2401 Ogletown Rd., Newark, Del. 10711. Models 1021 and 921 electronic filters, Model 821 automatic zero, Model 1320 atomic absorption concentration digitizer. Spex Industries, Inc. 3880 Park Ave., Metuchen, N.J. 08840. Emission, X-ray and IR spectrochemical accessories; high-purity materials; stan dards; Ramalog 5, laser Raman system; spectrofluorometer system, thermal chro matograph, sample'concentrator, and mass chromatograph.
supplies and accessories including station ary phases, supports, adsorbents, guaran teed performance column packings, stock column packings, custom-made packed col umns, glass columns, tubing, septums, and syringes; reagents, chemical standards, mixtures, calibration gases, derivatizing re agents, esterification reagents, reaction vessels, micro reaction vessels, and gas pur ifiers. Technical Equipment Corp. 917 Acoma St., Denver, Colo. 80204. D T A TGA instruments, universal sample chang er for X-ray instruments. Technicon Industrial Systems Tarrytown, N.Y. 10591. Automated analyt ical system complete from sample module to data output: AutoAnalyzerlî; BD20/40 Block Digestor; SASDRA, detectors including ion selective electrodes, colorimeter, fluorometer, and flame photometer; new systems for infrared reflectance analysis and on-line phenol Monitor IV. T e k m a r Co. P.O. Box 37202, Cincinnati, Ohio 45222. Low-cost hollow cathode lamps; low-cost recorders: integrating, log linear, two-channel; homogenizers and dispersers; GC sample concentrator, GC accessories. Tektronix, Inc. P.O. Box 500, Beaverton, Ore. 97077. Rapid scanning spectrometer, radiometers, calculators. T e m - P r e s Div., T h e Carborundum Co. 1401 S. Atherton St., State College, Pa. 16801. Thermolyne Corp. 2555 Kerper Blvd., Dubuque, Iowa 52001. Furnaces, hot plates, stirrers, stir plates, temperature controllers, ovens, incubators, vortex mixers, dri-baths. T h i n e (Technical H a r d w a r e Inc.) P.O. Box 3609, Fullerton, Calif. 92631. Digital photometers, thermometers, pressure monitors, color monitors, and proportional controllers. Torsion Balance Co. 125 Ellsworth St., (Box 535), Clifton, N.J. 07012. Electronic analytical balance, electronic top loader balance, optical projection balances, precision laboratory balances. Tracor, Inc. 6500 Tracor Lane, Austin, Tex. 78721. Model 222 GLC, Model 550 GLC, Model 560 GLC, analytical processor, Model 800 variable UV detector, Model 5000 LC, ULC, recorders, 270H sulfur analyzer, FPD detector, Hall detector. U n i m e t r i c Corp. 1853 Raymond, Anaheim, Calif. 92801. Universal Monitor Corp. 430 N. Halsted St., Pasadena, Calif. 91107. Olfax microcomputer-controlled MS automated compound analysis system.
Springer-Verlag N e w York, Inc. 175 Fifth Ave., New York, N.Y. 10010. "Chemically Induced Dynamic Nuclear and Electron Polarizations CIDNP and CIDEP" by C. Richard and P. Granger (NMR-8); "Medicinal Chemistry" by E. J. Ariens et al. (topics in current chemistry 52); "Electrons In Fluids" edited by J. Jortner and N. R. Kestner; "Covalency and Neutron Diffraction" by B. C. Tofield (Structure & Bonding 21).
UTI 325 N. Mathilda Ave., Sunnyvale, Calif. 94086. Model Q30-C precision mass spectrometer system; mobile, automatically operated and designed for composition and trace impurity analysis of specialty gases.
Supelco, Inc. Supelco Park, Bellefonte, liquid, and thin-layer
Variable Volumetrics, Inc. P.O. Box 209, Industrial Way, Wilmington, Mass. 01887. Cuvettes: polystyrene
Pa. 16823. Gas, chromatography
U T H E Technology, Inc. 325 N. Mathilda Ave., Sunnyvale, 94086.
Calif.
ANALYTICAL CHEMISTRY, VOL. 47, NO. 2, FEBRUARY 1975 · 203 A
EXPOSITION disposable; pipets: hand operated, variable volume; pipet tips. \* Λ n j i π ,/-\s*40c*
611 Hansen Way, Palo Alto, Calif. 94303. Techtron Model 65 flameless carbon rod atomizer with Model AA-6DAB and Model 1250 atomic absorption spectrophotome ters; Cary Model 118 UV-VIS recording spectrophotometer; Model 101 chromatog raphy data system; Model 8500 LC; Model 8000 AutoSampler for GC; Model 2740 GC; Model A-25 recorder; lab instrument/auto mation system; GC and LC basic books, ac cessories, and supplies; Model EM-390 NMR spectrometer system for observation of protons; Auger spectrometer; VGA-100 gas analyzer; mobile leak detector and vac uum components; MAT/US: MAT GC/MS system with chemical ionization source and automatic data processing system. Voland Corp. 27 Centre Ave., New Rochelle, N.Y. 10802. Electronic top-loading, high-capacity ultra precision, analytical balances; weighing systems, precision check weigher, gas bal ance, thermal analyzers: DTA and TGA. VWR Scientific P.O. Box 3200, San Francisco, Calif. 94119. J. T. Baker, Bronwill, Van-Lab, B&L spec trophotometers, YSI DO meter. Wang Laboratories, Inc. 836 North St., Tewksbury, Mass. 01876. System 2200C and 2200S computers; Sys tem 2200 line of small computers, Model 600 display programmable calculator, pe ripheral equipment for calculators and computers.
Waring Products Div.
Willey Corp.
Route 44, New Hartford, Conn. 06057. Commercial Blendors, ice crushers and as sociated accessories attachments.
Box 670, 720 E. Fee Ave., Melbourne, Fla. 32901. 318S IR spectrophotometer with diffuse reflectance capability; examples of its applications in analytical chemistry, solar energy, and remote sensing of the environment; capability of oscilloscope display of spectra, extensive software manipulation and data analysis.
Waters A s s o c , Inc. Maple St., Milford, Mass. 01757. Liquid chromatographs, LC column packing mate rials and accessories. Wescan Instruments, Inc. 3018 Scott Blvd., Santa Clara, Calif. 95050. Automatic viscosity timer, mem brane osmometer, vapor-phase osmometer, cloud point analyzer, temperature control ler, digital thermometer, conductivity meter, and flow cells. Westinghouse Electric Co. Westinghouse Bldg. RM1837, Pittsburgh, Pa. 15222. Hollow cathode lamps, electrodeless discharge lamps (EDL's), hydro gen continuum lamps, electrodeless exciter systems (EDL exciter systems), deuterium arc lamps. John Wiley & Sons, Inc. 605 Third Ave., New York, N.Y. 10016. Books in analytical chemistry and applied spectroscopy and related areas. Wilks Scientific Corp. 140 Water St., Box 441, S. Norwalk, Conn. 06856. Complete range of IR accessories in cluding long-path gas cells for use with most all commercially available IR spectro photometers; complete range of IR analyz ers for laboratory and field use including the new Miran-101 specific vapor analyzer; IR monitoring systems for continuous anal ysis of ambient air and process streams in cluding a hydrogénation monitor.
Wilmad Glass Co. Rt. 40 & Oak Rd., Buena, N.J. 08310. NMR, EPR, IR, sample tubes, cells and accessories, recording charts, deuterated solvents, microliter syringes. C. N . W o o d M f g . C o . Newtown Industrial Commons, Rt. 332, P.O. Box 310, Newtown, Pa. 18940. Light scattering monophotometer, light scattering duophotometer, differential refractometer, ratio digital readout, analog readout. Zeebac, Inc. 141 Fourth Ave., Berea, Ohio 44017. Emission spectrographic instruments and supplies including electronic readout and hold for microphotometers, graphite electrodes, sample prep, equipment, Kel-Melt sample remelt furnace, Swisher grinder, magnets, double pin cutters, vials, holders, photoplates, films, photo processor, AtmoJet, etc. C a r l Zeiss, I n c . 444 Fifth Ave., New York, N.Y. 10018. P M 6 low-priced spectrophotometer for routine and clinical use; P M 6 precision spectrophotometer for UV and visible with Doppel monochromators; M P M 01 universal microscope photometer, can be used as scanning microscope photometer.
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ANALYTICAL CHEMISTRY, VOL. 47, NO. 2, FEBRUARY 1975 · 205 A
