NIH Instrument Symposium and Exhibit Program Scheduled

NIH Instrument Symposium and Exhibit Program Scheduled \

SEVEN

SESSION

SYMPOSIUM

and

^*- comprehensive instrumentation exhibit will be held a t the National I n s t i t u t e s of H e a l t h , October 9 to 12. T h e 11th Annual I n s t r u m e n t Symposium and Research Equipment Exhibit is sponsored by the Washington Sections of ACS, American Association of Clinical Chemists, I n s t r u m e n t Society of America, Society of American Bacteriologists, Society of Applied Spectroscopy, and Society for Experimental Biology and Medicine. T h e r e will be exhibits of 130 m a n u facturers of electronic, mechanical, a n d optical i n s t r u m e n t s for laboratory and clinical research. T h e list of these exhibitors and t h e items to be exhibited are described below. T h e exhibit will be open daily from 11:00 a.m. t o 5:00 p.m., October 10 to 13 except October 11, when it will be open till 9:00. Topics scheduled for the symposia are: applied gas chromatography, factors influencing t h e i n t e r p r e t a t i o n of infrared spectra, optical r o t a t o r y

Symposium Schedule M o n d a y , O c t o b e r 9, 8 : 0 0 - 1 0 : 0 0 p.m. Applied Gas Chromatography Alton Meister, Tufts University School of Medicine, Chairman. Introductory Remarks. Alton Meister. Recent Advances in Analysis of Lipids by Gas Chromatography. S. R. Lipsky, Yale University School of Medicine. Gas Chromatographic Separations of Steroids and Related Compounds. E. C. Horning, E. O. A. Haahti, and W. J. A. Vanden Heuvel, National Institutes of Health. Application of Gas Chromatography to Amino Acids. D. E. Johnson, S. J. Scott, and Alton Meister, Tufts University School of Medicine. T u e s d a y , O c t o b e r 10, 2:00-4:00 p.m. Factors Influencing the Interpretation of Spectra E . R. Lippincott, University of Maryland, Chairman. Introductory Remarks. E. R. Lippincott. Factors of Importance in Interpretation of Infrared Spectra. R. C. Lord. Massachusetts Institute of Technologv. Interpretation of Molecular Electronic Spectra. Michael Kasha, Florida State University.

dispersion, thermogravimetric analysis, electron probe analysis, t h e application of physiological i n s t r u m e n t a t i o n to clinical problems, and electron magnetic resonance. T h e complete p r o g r a m a p pears below. Six of the exhibiting firms will hold special i n s t r u m e n t a t i o n clinics to demo n s t r a t e the research applicability of their newest equipment. Instruments shown will include an electronic spect r o p h o t o m e t e r , refrigerated cell fractionator, atomic absorption analyzer, Immunoelectrophoresis accessories, electronic hematocrit, a n d a protein monitor. D e m o n s t r a t i o n s will be given October 11, 12, and 13 from 9:30 to 10:15 a.m. and 10:15 to 11:00 a.m. T h e technical sessions will be held a t the Clinical Center Auditorium. T h e exhibits will be held in the Exhibit Hall of Building 22. Additional information is available from J a m e s B . Davis, National Institutes of H e a l t h , Public Health Service, Bethesda 14, M d .

Factors Influencing Interpretation of Nuclear Magnetic Resonance Spectra. E. D . Becker, National Institutes of Health. T u e s d a y , O c t o b e r 10, 8 : 0 0 - 1 0 : 0 0 p.m. Optical Rotatory Dispersion Ulrich Weiss, National Institutes of Health, Chairman. Introductory Remarks. Ulrich Weiss. Optical Rotatory Dispersion Theory and Experiment. Elliot Charney, National Institutes of Health. Application of Optical Rotatory D i s persion in Structural Studies of Polypeptides and Proteins. G. D . Fasman, Harvard Medical School. Applications of Optical Rotatory D i s persion to Structural Organic Chemistry. Kurt Mislow, New York University. W e d n e s d a y , October 11, 2:00-4:00 p.m. Thermogravimetric Analysis Saul Gordon, Fairleigh Dickinson University. Introductory Remarks. Saul Gordon. Thermoanalysis: Thermogravimetry and Differential Thermal Analysis. Saul Gordon. Recent Thermoanalytical Techniques. P. D. Garn, Bell Telephone Laboratories. Use of Thermoanalytical Procedures in Radiation Effects and Kinetic Studies. E. S. Freeman, Picatinny Arsenal.

Wednesday, October 11, 8 : 0 0 - 1 0 : 0 0 p.m. Electron Probe Analysis Isidore Adler, U. S. Geological Survey, Chairman. Introductory Remarks. Isidore Adler. Electron Probe Microanalyzer. L. S. Birks, Naval Research Laboratory. Applications of Electron Probe Microanalyzer. C. M . Schwartz, Battelle Memorial Institute. Biological Specimen Examination with Electron Probe X-ray Microanalyzer. E. J. Brooks, Naval Research Laboratory, A. J. Tousimis, George Washington School of Medicine, and L. S. Birks, Naval Research Laboratory. Elemental Analysis (Cu, Ag, Fe) at Subcellular Level in Tissue Sections of Human Specimens by Means of the Electronmicroprobe. A. J. Tousimis, George Washington School of Medicine and Isidore Adler, U. S. Geological Survey. T h u r s d a y , O c t o b e r 12, 2 : 0 0 - 4 : 0 0 p.m. Application of Physiological Instrumentation to Clinical Problems Gerald Cohen, National Institutes of Health, Chairman. Introductory Remarks. Gerald Cohen. Clinical Measurements of Biological Vibrations in Normal and Diseased States. M. L. Petrovick and J. Brumlik, Northwestern University Medical School. Acquisition of Physiological Data at the Bedside. L. A. Geddes, W. A. Spencer, H . E. Hoff, D . M . Hickman, A. G. Moore, M. Hinds, and M . Guadiano, Baylor University College of Medicine. Use of Ultrasonic Echo-Ranging to Record Motion of H e a r t Walls and Septa. J. M. Reid, University of Pennsylvania. Instantaneous and Continuous Computation of Aortic Blood Velocity from Spatial Pressure Gradient in Man. S. M. Fox, I I I , D. L. Fry, A. J. Mallos, J. C. Greenfield, J. R. Warbasse, F . M. Freitas, and D . J. Patel, National Institutes of Health. T h u r s d a y , O c t o b e r 12, 8:00-10:00 p.m. Electron Magnetic Resonance Edwin D . Becker, National Institutes of Health, Chairman. Introductory Remarks. Edwin D . Becker. Role of Electron Paramagnetic Resonance in Free Radical Chemistry. Larry Piette, Varian Associates. Electron Magnetic Resonance Studies of Free Radicals in Organic Crystals. Terry Cole, Ford Motor Co. Application of Electrochemical Methods to Study of Free Radicals by Electron Spin Resonance. A. H . Maki, H a r vard University. (Exhibitors

List

Follows)

VOL. 33, NO. 10, SEPTEMBER 1961

•

51

A

NIH EXHIBIT

NEW Tleaccr

An alphabetical listing of the exhibitors and the new products they will be demonstrating at the National Institutes of Health Sym­ posium-Exhibit appears below.

GRAPHIC RECORDER

• 1 MV full scale /

I

Ace Scientific Supply Co., Inc. 1420 Linden Ave. Linden, N. J .

· maximum signal source \ resistance: 50 Κ ohms

Recorder prices start at

\

$320.00 Model JY 120

You can measure l / 1 0 0 t h of a millivolt with this superior quality potentiometer recorder. Unit is extremely accurate (V2% of span), and fast (Y2 second balance t i m e ) . Step selection of ranges up to 10 V is provided by attenuator on front panel. Standard features include a floating input with separate chassis ground . . . 5" chart width . . . hum suppressor . . . chopper stabilization . . . changeable chart speeds. Write for Bulletin. 10 MV fixed span 10 MV to 100 V 1 MV full scale

Nesco

$320.00 $395.00 $535.00

Model JY-100 Model JY-110 Model JY-120

Manufacturers of Precision Recording

Instruments

6 3 8 West 17th St., Costa Mesa, Calif. Circie No. 141 on Readers' Service Can

PHOENIX

VARIABLE

GRADIENT

AMINO ACID ANALYZER MODEL VG-6000 LATEST IMPROVED COMMERCIAL VERSION OF THE APPARATUS DESCRIBED BY KARL A. PIEZ AND LOUISE MORRIS IN ANALYTICAL BIOCHEMISTRY, VOL. 1, 1960 For complet· detail· write Dept. VG for Bulletin 6000

Visit our booth No. IS at the National Institutes of Health Exhibit

October 9-12, 19S1

PPI

P H O E N I X P R E C I S I O N INSTRUMENT C O M P A N Y 3 8 0 3 - 0 5 NORTH FIFTH ST., PHILADELPHIA 4 0 , Circle No. 207 on Readers' Service Card 52 A

·

ANALYTICAL CHEMISTRY

PENNSYLVANIA

Exhibiting: Precision Scientific heated vacuum desiccator, Metrohm Model E300 p H meter with blood p H equipment, Metrohm Potentiograph, Coleman flame photometer, Coleman Metrion and com­ panion p H meters, Research Specialties shaking water bath and E-800 electro­ phoresis apparatus, Buchler instruments, Omni shaker, dialyzer, fraction collector. W m . Ainsworth & Sons, Inc. 2151 Lawrence St. Denver 5, Colo.

Exhibiting: Automatic recording bal­ ance, type SC Right-A-Weigh balance, type SCP printing Right-A-Weigh bal­ ance, analytical balance, weights. Aloe Scientific/Div. of Brunswick C o r p . 12201 New Columbia Ave. Silver Spring, M d .

Exhibiting: Aloe Spirometer, Steeline furniture, Swedish surgical instruments, Argyl tubes and catheters, Narda sonic cleaner, Petrolite fume hood model, Hydraputer, M O U S E Spirometer, de Fonbrune micromanipulator, de Fonbrune microforge, ultra-micro instrument sets, microtome knife sharpener, microtome knife stropper, hollow-ground microtome knives, Moduline laboratory furniture. American Cystoscope Makers, Inc. 8 Pelham Parkway Pelham Manor, Ν. Υ.

Exhibiting: Electro-medical diagnostic and surgical equipment, various catheters including cardiac catheter. American Electronic Laboratories, Inc. 1 Richardson Rd. Lansdale, Pa.

Exhibiting: Subcutaneous temperature telemeter, intracardiac phonocatheters, hydrogen catheters, cuvette oximeters, physiological stimulators and amplifiers. American Instrument Co., Inc. 8030 Georgia A v e . Silver Spring. M d .

Exhibiting: Aminco-Bowman spectrophotofluorometer complete with re­ corder and polarizing attachment, 9 place rotary Warburg apparatus, freezing point depression apparatus, French pressure cell, Meniscomatic buret, Aminco-Cotlove chloride titrator, photronreflectometer with serum agar measuring aid, Titra-Colormat, and Aminco-Dubnoff shaker-incubator.

V A R I A

A-60

NIH EXHIBIT American O p t i c a l Co., Instrument Div. Eggert & Sugar Rds. Buffalo 15. Ν. Υ.

Barnstead Still and Sterilizer Co. 2 Lanesville T e r r a c e Boston 3 1 , Mass.

Exhibiting: Microscopes-laboratory, phase, polarizing, stereoscopic, and com­ parison; photomicrographic camera; total solids meter; cardiometer.

Exhibiting: High purity water still ca­ pable of producing water with 0.1 ppm total ionized solids content; disposable cartridge type laboratory demineralizers ; pure water distribution systems; distilled water draw-off faucets; paraffin dis­ pensers; extremely fine water and air filters; purity meters.

American Sterilizer Co. 2424 W e s t 23rd St. Erie, Pa.

Exhibiting: Sonic energy system, freezedry apparatus, biogen continuous culture apparatus. Analytical Measurements, Inc. 585 Main St. Chatham, N. J .

N

Bausch & Lomb Inc. 635 St. Paul St. Rochester 2, Ν. Υ.

Exhibiting: Spectronic "505" spectropho­ tometer, DynaZoom Laboratory micro­ scope, StereoZoom microscopes, micro measuring projector.

Exhibiting: p H meters. H. Reeve Angel & Co., Inc. 9 Bridewell Place Clifton. N. J .

Exhibiting: National Appliance Labora­ tory apparatus Model 3560 C 0 2 incuba­ tor, Model 5670 chromatography oven, Model 3220 water jacketed C 0 2 incuba­ tor. Applied Physics C o r p . 2724 S. Peck Rd. Monrovia, Calif.

Exhibiting: new Cary Model 15 record­ ing spectrophotometer and new CaryLoenco chromatography radioactivity analysis system. Atomium C o r p . 940 Main St. W a l t h a m 54, Mass.

See Perkin-Elmer Corp. Baird-Atomic, Inc. 33 University Rd. Cambridge 38, Mass.

Exhibiting: tems.

Atomic instruments and sys­

Baltimore Instrument Co., Inc. 716 W . Redwood St. Baltimore 1 , M d .

Exhibiting: Universal stereotaxic instru­ ment, small stereotaxic instrument, stereotaxic instrument for teaching, Prior manipulator, Carl Zeiss polarimeter 0.01° (visual t y p e ) , operation microscope refractometers, E . Leitz Dialux-Pol research microscope, stereo microscope, Pradomicroprojector. Barber-Colman Co. Industrial Instruments Div. 1300 Rock St. Rockford. I I I .

Exhibiting: Gas chromatography equip­ ment using ionization detectors plus ac­ cessories.

Bendix Corp., Cincinnati Div. 3130 Wasson Road Cincinnati 8, Ohio

Exhibiting: Mass spectrometer, magnetic electron multiplier, electron microscope, air particle collector, vacuum evaporator, automatic polarimeter, dosimeter, LabVis automatic continuous viscosimeter, respirator\' analysis mass spectrometer.

B-D Laboratories, Inc. Rutherford,N. J.

Exhibiting: New Baltimore Biological Laboratory products for the microbiologi­ cal laboratory including reagents for fluorescent antibiotic techniques, the new Rim Seal disposable culture plate and culture media for staphylococcal studies. Cappel Laboratories is introducing CulturSTAT kits for the rapid easy preparation of complete tissue culture media as well as new cell lines and ani­ mal blood products. Samples of Falcon Plastic's new disposable, sterile, plugged pipets, 1 ml. serological and 1.1 ml. bac­ teriological, and tissue culture tubes and dishes as well as other single use products will be available.

Beckman Instruments, Inc. Scientific and Process Instruments Div. 2500 H a r b o r Blvd. Fullerton, Calif.

Exhibiting: Infrared and ultraviolet spec­ trophotometers, gas chromatographs with temperature programmer, p H meters and other analytical instruments.

Becton, Dickinson and Co. Rutherford, N. J .

Exhibiting: disposable and reuseable needles, including the new sterile dis­ posable plastic syringe, Vacutainer speci­ men tubes, Vacutainer culture bottles, sterile disposable blood lancets, B-D Dilupette, vinyl and polyethylene medi­ cal grade tubing, the new Ace medical glove and other allied products. Circle No. 132 on Readers' Service Card

A message of importance t o . . .

NATURAL PRODUCT CHEMISTS

Operating non-destructively on very small samples Sas low as 3rr,g for a 300 molecular weight compound . Varian's A-60 Spectrometer ι an pro vide valuable insights into the nature and structure of large, unwieidly compounds such as terpenes and alkaloids/. The new A-60 also pro­ vides quantitative analysis of simple mixtures. By providing highly reproducible spectra on pre-calibrated charts, the easy to-operate A-60 makes the val­ uable analytical capabilities of Ν MR practical for routine use by organic chemists in all industries. for complete data on the now A 60 write the INS1RUMFNT DIVISION i-'i I : '"

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V A R I A N

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associates

611 HANSEN WAY• PALO ALTO. CALIFORNIA

NIH EXHIBIT Belleo Gloss, Inc. P. O. Box Β Vinelond, N. J . Exhibiting: V.I.P. non-corrosive borosilicate pipets, DeLong culture flask, 4liter-per-hour all-glass still, tissue cul­ ture glassware, Sykes-Moore tissue cul­ ture chamber. Bethlehem Apparatus Co., Inc. Front and Depot Sts. Hellertown, Pa. Exhibiting: New Polariscope (floor and bench), Heathway glass lathe, new Beth­ lehem glass lathe, glassworking acces­ sories, mercury cleaning service and equipment. Bio-Tech, Inc. 205 Broadway Cambridge 38, Mass. Exhibiting: Sterile aerobic cap for cul­ ture tubes, sterile aerobic petri dish cover, other culture apparatus. Branson Instruments, Inc. 37 Brown House Rd. Stamford, Conn. Exhibiting: Sonifier, Sonoray, LG-150.

stat, blood p H , Haake constant tempera­ ture circulators, Hi Voltage electrophoretic separator, new Sartorius analytical balances. Buchler Instruments, Inc. 514 West 147th St. New York 31. Ν. Υ. Exhibiting: Flash evaporators, rotary Evapo-Mix, water-booster, fraction col­ lectors with continuous or sectional turn­ tables for micro and preparative collec­ tion, refrigerated fraction collector, Varigrad, density gradient device, micropump, electrophoresis assembly for paper, starch and immuno electrophoresis, starch gel vertical electrophoresis assembly. Cahn Instrument Co. 14511 Paramount Blvd. Paramount, Calif. Exhibiting: Balances with precision to 0.1 microgram, capacity to one gram, which are not affected by vibration, tem­ perature, level, etc. Recording balances. All of them are based on the electromag­ netic weighing principle, and are simply operated.

Brinkmann Instruments Inc. 115 Cutter Mill Rd. Great Neck, Ν. Υ.

Canal Industrial Corp. 4935 Cordell Ave. Bethesda 14. Md.

Exhibiting: Metrohm equipment for p H

Exhibiting:

Disc

electrophoresis,

PLASTIC LABORATORY WARE AVAILABLE FROM YOUR LOCAL SUPPLY DEALER

line available f r o m ^k

ONE source

BEL-ART

| A

PRODUCTS

From beakers to purnps,^! from tanks to valves. Stock or made to order. If you have a problem concern­ ing plastic laboratory w a r e or its application, consult our technical de­ partment. FREE.' Send for new 44-page catalog

^k

PEQUANNOCK, N . J . OXbow 4-0500

PLASTICS

fa*Seteaoe&ui/Maiiew Circle No. 188 on Readers' Service Card

54 A

•

ANALYTICAL CHEMISTRY

Central Scientific Co. Div. of Cenco Instruments Corp. 1700 Irving Park Rd. Chicago 13. III. Exhibiting: Air pollution field test set, forced air incubators and ovens, Petersen molecular models, etc. The Chemical Rubber Co. 2310 Superior Ave. Cleveland 14, Ohio Exhibiting: Labline shaking incubator, Cat. No. 3570; Labline radiant heat bath, Cat. No. 3045; shaker bath, medium size Cat. No. 66802; and Sartorius Kilomat I balance. Chicago Apparatus Co. 1735 N. Ashland Ave. Chicago 22, III. Blue M No. M R 3210 cooling bath, Totocon clamps, C. A. Co. Labjack, jumbo clamps, and plastic slide box.

BEL-ART

The MOST C O M P L E T E

flow analyzers, u.v.-visible spectropho­ tometers, densitometers, grating monochromators; precision strip-chart re­ corders, biological freezing and freeze drying equipment, M-16 electron micro­ scope, and P-61 electron microprobe.

u.v.

Clay-Adams, Inc. 141 East 25th St. New York 10. Ν. Υ. Exhibiting: Adams Thrombitron, a new, waterless Prothrombin test unit offering highly accurate, reproducible results; Adams Pedichron, unit which operates with an electrical foot switch any stand­ ard stop watch; Adams Autochron, an automatic reset numerical read-out timer ; Adams Cyclo-Mixer, for complete fluid mixing in tubes or other laboratory vessels; Intramedic animal tested poly­ ethylene tubing in sterile and regular packing. Coleman Instruments, Inc. 42 Madison St. Maywood, 111. Exhibiting: Automatic titrator, carbonhydrogen analyzer, nitrogen analyzer, ultramicro analytical program, junior spec­ trophotometer, Companion p H meter, and Metrion p H meter. Connecticut Instrument Corp. Box 337 Wilton, Conn. Exhibiting: Accessories for infrared and ultraviolet spectroscopy including Irtran2 absorption cells, micro gas cells and equipment for collecting gas chromato­ graphic fractions. Cooke Engineering Co. 735 North St. Alexandria, Va. Exhibiting: Microtitration Kit (Microtiter) and BAK Amplifier.

Corning Glass Works Corning, Ν. Υ.

NEW TABLE-TOP SIZE

Exhibiting: Pyrex brand color coded pipets, measuring beakers, IV2 cover slips, filter flasks with replaceable tubulations, new graduates, Vycor brand immersion heaters, and Pyrex labware.

HYDROGEN PURIFIER

Coulter Electronics, Inc. 2525 North Sheffield A v e . Chicago 14, III.

. . . produces 99.999 + % pure and dry hydrogen from impure sources

Exhibiting: Coulter counter Models A, B, and C, and automatic size distribution plotter. Curtiss-Wright C o r p . Princeton, N. J .

Exhibiting: Multichannel recorders, sensi­ tive D C amplifier, and temperature con­ trollers. The Decker C o r p . 45 Monument Rd. Bala C y n w y d , Pa.

Exhibiting: Ophthalmic artery Pulsensor Model 315-1; the Caudal Plethysmograph Model 320-1. Dibert Vslve and Fitting Co., Inc. 606 Frederick Rd. Baltimore 28, M d .

Exhibiting: Swagelok tube fittings, stain­ less steel, Teflon, zytel, polyethylene, etc., Nuclear Products Co. fine metering valve, plastic valve, etc. Lester A. Dine Co. 58-06 37th A v e . Woodside 77. Ν. Υ.

Exhibiting: Startech camera, projectortheaters, electronic flash equipment. Eberbach C o r p . P . O . B o x 1024 Ann Arbor, Mich.

If your requirements involve ultra-pure, dry hydrogen, here's a versatile, small capacity purifier at a very economical price. With practically instantaneous warm up, this unit produces 99.999 + % pure hydrogen for either laboratory studies or process control chromatography. Two table-top size models are available . . . Model CL-A with a capacity of 40 ml/min for laboratory studies and Model CH-A with a rated capacity of 100 ml/min for process control. These units are specifically designed for gas chromatography, flame photometry, hydrogen work, or wherever high purity hydrogen is required, instantly and economically, in small quantities.

Employs palladium-silver alloy for diffusion Source gas with 75% or more hydrogen*, such as cylinder hydrogen or dissociated ammonia is passed through a special palladium-silver alloy that selectively separates hydrogen from all impurities. Result is hydrogen so pure that modern analytical techniques cannot detect impurities. And, the palladium alloy never becomes brittle, needs no purging.

Pure hydrogen—at the flip of a switch

Exhibiting: Water bath shaker, Waring blendor accessories, Roto-Tilt hotplate shaker, laboratory shakers, laboratory stirrers.

The unit is simply plugged into any convenient 115-volt, a-c outlet, the impure hydrogen connected to the inlet...pressure and flow adjusted to the proper operating range and the ultra-pure, dry hydrogen collected at the outlet.

E-C Apparatus Co. 538 Walnut Lane Swarthmore, Pa.

. . . and economical, too

Exhibiting: Countercurrent fractionators, automatic and manual. Electrophoresis apparatus with water-cooled pressure plates. Vertical gel electrophoresis ap­ paratus. Destaining apparatus.

The Model CL-A, 40 ml/min capacity, and the Model CH-A with a 100 ml/min rating are economical initially and cost little to operate. Delivery approximately 30 days. "Capacity proportionate to hydrogen content in source gas. Rated capacity based on 98% H2. B u l l e t i n N o . 1159-1 d e s c r i b e s i n d e t a i l t h e e n t i r e l i n e o f M i l t o n R o y H y d r o g e n P u r i f i e r s — i n c l u d i n g s t a n d a r d u n i t s u p t o 200 c f h c a p a c i t y .

The Electric Hotpack Co., Inc. Cottman Ave., a t Melrose St. Philadelphia, Pa.

Exhibiting: Constant temperature walkin room ; high temperature bench furnace (1900° F.) ; vacuum oven to 1 micron, two ranges, 200° and 300° C ; chromatograph oven.

Write for Bulletin #1159-1.

Controlled Volume Pumps

milton Roy

Colorimetric Analyzers Hydrogen Purifiers

25

Laboratory Instruments CHEMICAL INSTRUMENTATION SYSTEM

Milton Roy Company, 1300 E. Mermaid Lane, Philadelphia 10, Pa.

YEARS

Circle No. 181 on Readers' Service Card

VOL. 33, NO. 10, SEPTEMBER 1961

•

55 A

NIH

TRITIUM-CARBON RADIO CHROMATOGRAPHS The chromatogram strip is scanned from both sides with two windowless flow counters (see insert). The chromatogram strip constitutes a p a r t o f the cathode o f the detector, insuring highest sensitivity for tritium b e t a rays (Patented). Total back­ ground 2 4 counts/min. The scan­ ning h e a d can b e decontaminated through immersion in a n ultra-sound b a t h or in boiling d e t e r g e n t . Gas consumption: 1 N o . 1A cylinder lasts for 4 0 0 0 hours. Model ACSHIC. For continuous processing of Ά , 1 and 1 Vi inch wide chromato­ gram strips, spliced end to end either during scanning, or stored on reels. With Texas rectilinear recorder, with fingertip control speed selector. Automatic coding with separate marker pen. Rf-values can be read directly from the chart. Complete with counting-rate meter with built-in linear amplifier, pulse height discriminator, 1 1 ranges, 1 2 time constants and aural monitor $2,200 Model ACSDIC. Same, with dual channel recorder and two countingrate meters. Produces separate plots for tritium and Carbon-1 4 , or for any two tracers on the same chromatogram strip $3,500

INTEGRATING

Manual chromatogram scanner with rate meter

$400

THE FORRO SCIENTIFIC COMPANY 8 3 3 L i n c o l n Street

Davis 8-5729

E v a n s t o n , Illinois

Circle No. 162 on Readers' Service Card

or stirring p a d d l e

T-LINE SUPPORT STAND # 1 1 0 heavy cast iron base with a %" χ 30 "cadmium plated steel support rod that cannot work loose. Can accommodate jars u p to 18" in diameter. $1 100 Write for literature on our line of light and heavy duty stirrers.

TALBOYS AVENUE

•

I N S T R U M E N T C O R P .

EMERSON,

Circle No. 185 on Readers' Service Card ANALYTICAL CHEMISTRY

The Exact W e i g h t Scale C o . 538 E. Town St. Columbus 15, Ohio

Exhibiting: Small animal weighing equip­ ment. F & M Scientific Cor>. S t a r r Road and Route 41 P. O. Box 245 Avondale. Pa.

Exhibiting: Model 500 linear pro­ grammed high temperature gas chromatograph; Model 1609 flame ionization de­ tector attachment for F & M Models 500 and 300 gas chromatographs ; Model 50 automatic attenuator; Model SI-4 solid sample injector; Model GV-10 gas sam­ pling valve; Model 141 safety ignition unit for Schôniger oxygen flask.

Exhibiting: Nalgene plastic apparatus, Schuco Uni-Sol, Labglass macroglassware, Ultrasonic Industries diSontegration ultrasonic cleaner, Doerr glassware kit.

Stepless speed control from 60 to 6000 R P M through a speciallydesigned taper wound rheostat. T h r e e shafts provide high torque at low speeds. Stirs oil at 60 R P M . Completely enclosed 1/50 H . P . Universal Bodine motor—115 V A C or D C . C l a m p on heavy cast a l u m i n u m rheostat housing for support rods u p to lA" diameter. Special swivel joint permits stirring without $3400 at any angle. Adjustable chuck. support stand

•

Exhibiting: Biological refrigerators.

Federal Scientific Co. 10421 Metropolitan Ave. Kensington, M d .

• High tcrque at low speeds • Variable speed control.

56 A

J . R. Enright C o . 4618 LelandSt. Chevy Chase 15. M d .

Exhibiting: Spectrofluorometer, fluorometer, grating monochromator, photometer.

106 STIRRER

A C K E R M A N

Exhibiting: DISA equipment—Three channel, photorecording Electromyograph. Electronic dual stimulator. Needle and surface electrodes for record­ ing and stimulation. Multielectrodes. Needle electrode sterilizer. Mean volt­ age unit with electronic switch. Physio­ logical amplifiers. Dual beam oscillo­ scope. Transducers.

Farrand O p t i c a l Co., Inc. E. 238th St.. & Bronx Blvd. New York 70. Ν. Υ.

-LINE

13

EMG Associates, Inc. 20 East 68th St. N e w York 2 1 . N . Y .

RADIOCHROMATOGRAPH

Model ACSIIC. Plots besides the curve displaying the activity distribution, with the help of a second pen, in different color, the integrated value of the activity curve, i.e. the area under the peaks. Both pens move across the full, wide-grid ( 9 % ) chart paper. Complete with rate meter $3,500 M o d e l MCS.

EXHIBIT

NEW

JERSEY

Fischer & Porter Co. County Line Rd. Warminster, Pa.

Exhibiting: Laboratory glassware includ­ ing LabCrest stopcocks and burets, threaded glass needle valve, new stop­ cock lock, new laboratory support frame clamp, and pressure bottles. Fisher Scientific Co. 7722 Woodbury Drive Silver Spring. M d .

Exhibiting: Beckman DK-2A ratio-re­ cording spectrophotometer, JKM-Stubbings continuous electrophoresis apparatus, Fisher Model 36 automatic titrator, Fisher Autocytometer, Fisher hemophotometer.

V A R I Α

NIH EXHIBIT Forma Scientific, Inc. Box 649 M a r i e t t a , Ohio

Exhibiting: Newly designed small cold chamber.

incubator,

J. Melvin Freed, Inc. 306 N. 5th St. Perkasie, Pa.

Exhibiting: Corning brand optical cover glass. Pre-cleaned microscopic slides. Culture slides. Gardner Laboratory Inc. P. O . Box 5728 5521 Landy Lane Betheida 14. M d .

Exhibiting: Lourdes centrifuges Models LCA-2, BLC-2 & Multi-Mixer, Sartorius Selecta balance, micro laboratory glass­ ware, Haake thermostats, Gardner color difference meter. Grass Instrument Co. 101 O l d Colony A v e . Quincy, Mass.

Exhibiting: Model 5 polygraph, unit inte­ grator, oximeter control circuit, physio­ logical stimulators, physiological pre­ amplifiers, square wave calibrator, trans­ ducers, and other related equipment for research and teaching. Emil Greiner C o . 2 0 - 2 6 No. Moore St. N e w York 13. Ν. Υ.

Exhibiting: Precision Chronofrae gas •hromatograph vacuum glove box, Acoropet, ball joint clamps, See-Thru in­ cubator, and micro buret. William J . Hacker & Co., Inc. P. O. Box 646 West C a l d w e l l , N. J .

Exhibiting: Reichert microscopes, Jung and Reichert microtomes. H a r v a r d Apparatus Co. Dover, Mass.

Exhibiting: Complete line of artificial respiration pumps, infusion pumps, peri-t ;dtic pumps. Heinicke Instrument Co. 2035 Harding St. Hollywood, Fla.

Exhibiting: Laboratory glassware wash­ ers, disposable hypodermic needles. Heinicke Heigun for needle-less hypo­ dermic injections. Herman Associates, Inc. 941 Rollins A v e . Rockville. M d .

Exhibiting: Varian G-10, G - l l , and G-14 recorders; Hewlett-Packard 1 mc tran­ sistor counter, 412A voltmeter, 428B

Ν

A60

clip-on D C milliammeter, 456A AC cur­ rent probe, 160 oscilloscope with display scanner; Dymec digital system with 2540 driving typewriter tape punch; Sorensen Q M power supplies; John Fluke nuclear supply, 710A universal impedance bridge, and potentiometers; Kin-Tel 121 ampli­ fier. H y d r o Therm Co. 7301 Melrose St. Philadelphia, Pa.

Exhibiting: Water stills, water and scientific apparatus.

baths,

Instrumentation Associates, Inc. 17 West 60th St. N e w York 23. Ν. Υ.

Exhibiting: Freeze drying equipment, MSE-Mullard ultrasonic disintegrator, Godard pulmo-analysor, Propipettes, microtitrator for serial dilution technique, Fiske osmometer, accessories for cardio­ pulmonary investigation. International Equipment Co. 1284 Soldiers Field Rd. Boston 35, Mass.

Exhibiting: Laboratory centrifuges, mi­ crotome-cry ostat. Isomet C o r p . 433 Commercial Ave. Palisades Park, N. J .

Exhibiting: Stable isotopes, mass spec­ trometer analytical services, optical crys­ tals and scintillation crystals, infrared cells and accessories, X-ray analyzer crystals, custom grown crystals. W i l l i a m B. Johnson and Associates P.O. Box 415 Mountain Lakes, N. J .

Exhibiting: Radiation safety devices, portable survey meters (transistor), counting room equipment, and fixed mon­ itoring stations. Keithley Instruments, Inc. 12415 Euclid A v e . Cleveland 6. Ohio

Exhibiting: Electrometers, micro-microammeters, microvoltmeters, power sup­ plies, AC amplifier, D C amplifier, megohmmeters, milliohmmeter. Kimble Glass C o . P. O . Box 1035 Toledo 1 . Ohio

Exhibiting: Complete line of scientific laboratory glassware including beakers, Erlenmeyer flasks and Petri dishes, LubriFlo stopcocks having Teflon plugs, square volumetric flasks, and Kimax boiling flasks. Clinical apparatus will include Kimax color-coded pipets, centrifuge tubes (standard and heavy d u t y ) , and color-coded culture tubes. Circle No. 215 on Readers' Service Card

A message & of importance t o . . .

UNIVERSITIES

The study '>t Ν Mi-.' us a part ni basit chemistry eurm ui ·. ii :s ϊκ•; ι me mare practical, us .veil as en m necessary, '.vitii t i i e m i t . s h e 11 ·. > r ; o ! t h e new VuM.iu A- (••(; ' .| •>-τ!ti i m n D r Sin; t- ! ' i i ' Λ > ·(: ι . '•ieuT • :< · operate .1111] p r o v i d e h ι s ; 111 \ ι e ρ ι e 1111 :' i b ί e spec! ra, i!! ui . ] . : u . ] ' i . , η ] m.i ey uu l o e y a d s a ' e ι iieini'.It·, students new :i i t i u u tv to l.iei o m e fa­ milial vvitii the anaDln ul capabilities •t [-JMl-; ivut !",'(. ii UU 0 tius niu(ie N M R analyse routine fer proet-s; m o n i t o t i n p and i;n,ility eon trol - - as '.veil us in D I S H reseun Ii unu anaiytk ul laboratories. I or ( ornplete data on |D> new Α ί -('ι write the I NS 1 k'UMb N"T D I V I S I O N .

V A R I A

N

associates

NIH

EXHIBIT

Kontes Glass C o . Spruce St. Vineland, N. J .

Exhibiting: A tilting dispenser having a new, unique sliding plunger feature for selecting and adjusting volume settings, several new dispensing pipets which also enable volume selection and which auto­ matically zero using check valve controls, new Bantam-ware items of small organic glass apparatus and new tissue culture glassware items. Labline, Inc. 3070-82 W . Grand A v e . Chicago 22. Illinois

Exhibiting: new disposable mouse cages, new hematocrit, No. 20 centrifuge, im­ proved Chromatofuge, new twelve-rack serological bath, papergram scannercamera, Duo-vac oven, Thermo-cups, chromatographic Speedi-cell, miscellane­ ous laboratory clamps. LaPine Scientific C o . 6001 South Knox A v e . Chicago 29, I I I .

Exhibiting: Tempunit, atom models, lat­ tice models, melting point apparatus, La Pine clamps, Leybold vacuum pumps, optical goniometer, Sauter Mono Pan balance, LaPine 5 in 1 control, Clivac Pippetter. S. S. beakers. Leeds & Northrup Co. 4901 Stenton Ave. Philadelphia 44, Pa.

SNDBBFJBCCX NSKAJLKSMC;LSAMC; CS,MCNSLANCLKSNCLKsa CASCJLA;SKC';SALKC'SAKC'; CMSCM'mc:slaC';salc":salkc":slakc';sla SACNSLAKNCLSAKNCLKSANCLKASn >kascnL;KSacj;LSamc';SAlmc';SAlckm":aslcm< >aslcnLKSANC;Lsaknc:lsaknc;LsakcnL;SAkCJN SAcNS;ALCNLS;KACJLSC;SLMCV;samc DKVNSDLkJG[JGRKGRKG]RKG][RPK VKJDABK;jVBKslnVNLKSdV'SDLV'lKV

with Polaroid® Land Back

you are just 10 seconds from a photomicrograph!

Exhibiting: Speedomax H , Azar recorder, new L&X Ε-Line of laboratory equip­ ment, ratio sets, bridges and potentiom­ eters. E. Leitz, Inc. 468 Park Avenue South New York 16. Ν. Υ.

Exhibiting: New full automatic MicroCamera Orthomat, new improved micro­ manipulator, research microscopes, fluo­ rescence microscope, mirror objectives for the full wavelength range, microtomes of modern design. Lipshaw M f g . Co. 7446 Central A v e . Detroit 10, Mich.

Here is an unequalled combina­ t i o n of s p e e d , v e r s a t i l i t y a n d performance in photomicrog­ raphy. W i t h t h e Polaroid Land Back, there's no g u e s s i n g , no w a i t i n g , n o darkroom. A n d -with the n e w e s t Polaroid Land film you get f i n i s h e d prints i n just 10 s e c o n d s . . . n o t 6 0 s e c o n d s a s previously.

Exhibiting: Lipshaw automatic tissue processor, cryotome and rust-proof micro­ tome.

T h e W i l d M 2 0 p e r m i t s c o n t i n u o u s b i n o c u l a r observation. Phototube deflects 25% of t h e l i g h t to binocular tube. Special format i n d i c a t i n g e y e p i e c e p r o v i d e s rapid, perfect focusing.

LKB Instruments, Inc. 4840 Bugby A v e . Bethesda 14, M d .

T h e W i l d M 2 0 i s a v a i l a b l e w i t h s e x t u p l e r e v o l v i n g nosepiece, 2 0 - w a t t built i n i l l u m i n a t i o n , Cinetube, P h a s e Contrast, Incident Light, Varioolor a n d other e q u i p m e n t . Write for B o o k l e t M 2 0 .

Exhibiting: New immuno-electrophoresis accessories compatible with standard L K B paper electrophoresis equipment, new multiphotometric analyzer for auto­ matic analysis of streaming effluent, pre­ parative electrophoresis equipment, pre­ parative chromatography equipment, au­ tomatic fraction collecting, Uvicord analyzer for streaming fluids at 254 ταμ.

"The FIRST name in a complete line of Surveying Instruments, Photogrammetric Equipment and Microscopes.

* by Polaroid Corp. Cambridge, Mass.

HEERBRUGG Circle No. 27 on Readers' Service Card VOL. 3 3 , N O . 1 0 , SEPTEMBER 1 9 6 1

•

59 A

NIH EXHIBIT Precision and Pulsefree mioropump, stream and batch conductivity measure­ ments, ultramicrotome for ultramicrotomy.

Sensitivity: Kio mg. Reproducibility: ±0.03 mg.

The London Co. 3355 Edgeeiiff T e r r a c e Cleveland 1 1 , Ohio

Readability: V20 division on projected scale Capacity: 200 g.

Exhibiting: Radiometer instruments in­ cluding p H meters, titrator and Titrigraph with new automatic buret unit, a new Astrup micro Tonometer, blood pH equipment, the Astrup ultra micro ap­ paratus and Heto circulating water ther­ mostats. Lourdes Instrument Corp. 656 Montauk Ave. Brooklyn 8, Ν. Υ.

Exhibiting: Model VA-2 "Vacufuge," Clini-Fuge, refrigerated centrifuges, and homogenizers.

^§f«g^i

Mechrolab, Inc. 1062 Linda Vista A v e . Mountain View, Calif.

:* : 'ittii-i- : #iii

Exhibiting: Model 301, vapor pressure osmometer, Model 401, auto-Warburg, Model 501, Reiff membrane osmometer. M e t t l e r Instrument Corp. P.O. Box 100 Princeton, N. J .

Exhibiting: Analytical balances, precision scales, balances, remote control operating.

Ainsworth Right-A-Weigh

Microchemical Specialties C o . 1825 Eastshore Highway Berkeley 10, Calif.

Substitufion Weighing Balance

Exhibiting: Metabolism cage, rat and mouse (new), micro Teknikit, com­ plete micro clinical laboratory the size of a large desk top blotter, new aquameter, novel tissue homogenizer, anaero­ bic vacuum jar, electrochromatography apparatus, Misco micro pipets.

m FAST • ACCURATE All

controls

case,

clearly

in-line,

unob­

WRITE FOR BULLETIN

659

designated.

EASY TO USE

on

front

Eye-level,

of

structed r e a d o u t .

"^^fSB^0*":

WM.

AINSWORTH

& SONS, INC.

Circle No. 40 on Readers' Service Card

•

ANALYTICAL CHEMISTRY

Exhibiting: Electronic medical systems for measuring and recording a wide variety of physiological functions, for use in research, diagnosis, and surgery. Body function recorder for use in post-opera­ tive patient care. National Instrument Laboratories, Inc. 828 Evarts St., Ν . Ε.. Washington 18, D. C .

2151 LAWRENCE S T . · TELEPHONE ALpine 5-1723 · DENVER 5, COLORADO

60 A

Minneapolis Honeywell Reg. Co. Heiland Div. 5200 E. Evans A v e . Denver 22, Colo.

Exhibiting: Optica atomic absorption analyzer, new Optica double-beam re­ cording grating spectrophotometer, Op­ tica accessories for atomic absorption, spectrofluorimetry, turbidity, fluorescence analysis, reflectance measurements, and flame analysis, Chromoscan scanning in­ tegrator for all electrophoretic media and chromatography, J. L. C. recording micro-

NIH EXHIBIT densitometer, N J.L.-Pearse Cryostat with Minot or Cambridge microtome, the Tesla Electron Microscope, NJ.L.-Goers 3-D universal condenser, the new N.I.L. micro Van Slyke apparatus, Agafor II micro- and Immunoelectrophoresis ap­ paratus, N.I.L. flame photometer, G.M.E. high-voltage electrophoresis apparatus, Gilford recording density converter for kinetic studies, TranStab universal high stability power supplies. Neater and Faiist 2401 Ogletown Road Newark, Delaware

Exhibiting: Prepkro preparatory and Anakro analytical chromatograph, Anakro chromatograph, rotary spray evapora­ tor distillation equipment. New Brunswick Scientific Co., Inc. P.O. Box 606 New Brunswick, N. J.

Exhibiting: Environmental incubatorshaker with 10V> cubic ft. chamber for growing quiescent and agitated cultures simultaneously under controlled condi­ tions of agitation, temperature, and at­ mosphere, freeze drying apparatus, fer­ mentation pilot plant, automatic pH con­ troller with antoclavable pH electrodes, transistorized Bactronic colony coun­ ter, tissue culture Rollordrum. New York Laboratory Supply Co., Inc. 76 Varick St. New York 13, Ν. Υ.

Exhibiting: Precision Scientific and Nylab ; weighing funnels, filter grip, wash bottle, etc. Nuclear-Chicago Corp. 333 East Howard Ave. Des Plaines, III.

Exhibiting: Radioactivity detection and measuring instrumentation. Nuclear Industries, Inc. 10 Holland Court Valley Stream, Ν. Υ.

Exhibiting: Scintillation probes ; crystals; low back-ground systems; transistorized low-cost scalers and amplifiers; radio­ chemicals. Offner Electronics. Inc. 3900 River Rd. Schiller Park, III.

Exhibiting: Offner Type Τ and Type TC electroencephalographs, Offner Type R direct writing oscillograph, Invengineering Recordisplay. Optical Cell Co., Inc. 4204—37th St. Brentwood, Md.

Exhibiting: Optical absorption cells for use in the ultra-violet, visible, near infra­ red. Glass-to-glass graded seals, glass-tometal graded seals.

Packard Instrument Co. Inc. Box 428 La Grange, III.

Exhibiting: Model 314EX Tri-Carb liquid scintillation spectrometer, Model 320 Tri-Carb flow monitor, Models 317 & 318 Tri-Carb flow detectors, Model 440 Armac scintillation counter, Model 403 auto-gamma spectrometer system, Model 410A auto gamma spectrometer, Model 250A scaler, Model 800 gas chromato­ graph, Model 234 automatic liquid frac­ tion collector, Model 830 automatic gas fraction collector.

A-60 THE NEW NMR

Palo Laboratory Supplies, Inc. 75 Ninth Ave. New York 11, Ν. Υ.

Exhibiting: equipment.

Laboratory

supplies and

The Perkin-Elmer Corp. 8055 13th St. Silver Spring, Md.

Exhibiting: Model 350, UV, VIS, NIR, spectrophotometer, Model 222 linear tem­ perature programmer for VPC, Model 237 grating infrared spectrophotometer and Model 202 low-cost UV, VIS spectro­ photometer, Model 223 hydrocarbon de­ tector, Volemetron automatic blood vol­ ume measuring instrument and the Gammacord all purpose digital counting rate device for measuring all gamma ray samples. (The latter two are products of the Atomium Corp., Waltham, Mass., a P-E subsidiary.) Pfaltz & Bauer, Inc. 350 Fifth Ave. New York, Ν. Υ.

Exhibiting: Bunge analytical, semi-micro, and micro balances; Universal bomb for halogen, sulfur, phosphorous, and silicone determinations; Universal micro-combus­ tion Automat; latest model Schmidt and Haensch polarimeter; Schmidt and Haensch Anomaloscope; Schmidt and Haensch refractometer; Polarograph for use with any standard recorder; Fixanal preparations.

A message *,|| of importance toV.V·;;'

Although both NMR and infrared at valuable for determining the natur and structure of organic compound each measures totally different prof erties of molecules. Because of th difference in approach, a chemic; environment that causes a serioi interference and ambiguity in infr; red may create no difficulties at a for NMR •

Phipps & Bird, Inc. 303 South Sixth St. Richmond, Va.

Exhibiting: Respiration pumps; infusion pumps; stimulator; Kymographs; cardiotachometer. Phoenix Precision Instrument Co. 3803-05 North Fifth St. Philadelphia 40. Pa.

Exhibiting: New Model K-8000 amino acid analyzer, new Model VG-6000 vari­ able gradient analyzer, new Model JM2000 aerosol and smoke photometer, Uni­ versal 1000 series light scattering photom­ eter, dual photomultiplier photometer, visual differential refractometer, auto­ matic indicating and recording differential Circle No. 216onReaders'Service Card

The new easy to use Varian A-60 ha now made routine NMR analysis fe; sible by providing highly reproducibl spectra on pre-calibrated chart; NMR spectra can be collected, cats loged and used much the same wa as infrared. With both spectroscopic technique .available in your laboratory, you ca solve a much greater range of prot lams, more conveniently and witl greater certainty.

\V A R I A

N

associate J

/ 611 HANSFN WAV . PALO At TO, CAI IF OR N i l

NIH EXHIBIT

"Admirable . . . fulfills an important need" -Journal of the A.M.A.

BIOCHEMISTRY OF STEROIDS by ERICH H EFT M AN and ERICH MOSETTIG both of Steroid Section, Laboratory of Chemis­ try, National Institute of Arthritic and Meta­ bolic Diseases, National Institute of Health 1980, 22J, pages, %6.25 " T h i s admirable little book encompasses t h e entire steroid field. Lucid exposi­ tions cover distribution, biosynthesis, metabolism, physiological significance, and analysis of cholesterol, other sterols, t h e vitamins D , steroid sapogenins and alkaloids, cardiac glycosides, bile acid, progesterone, corticosteroids, a n d r o ­ gens and estrogens. T h e a r r a n g e m e n t of t h e classes of steroids follows their biogenetic relationships . . . " T h e book is directed toward t h e special interests of t h e biological scientists in steroids a n d fulfills an i m p o r t a n t need. The carefully integrated t r e a t m e n t includes sufficient introductory material t o meet t h e needs of readers with minimal background. Organic chemistry sub­ serves t h e primary purpose of t h e book, b u t t h e simplified t r e a t m e n t does not compromise scientific standards. "A most useful feature is an introduc­ tion to t h e literature on steroids. A selected, classified bibliography of 45 pages contains i m p o r t a n t articles p u b ­ lished since 1950. T h e subject in­ dex cites t h e bibliography as well as comprehen­ sively covering t h e text. " [I ] recom­ mend this clear concise introduc­ tion to steroids from the bio­ chemical point of view." — Journal of t h e

A.M.A. 30 DAYS' FREE TRIAL Mail

This

Coupon

refractometers for chromatographic ap­ plications, process refractometers, glass cells, honey, maple sirup, sugar cane sirup, and sugar cane molasses compara­ tors. Photovolt C o r p . 1115 Broadway New York 10, Ν. Υ.

Exhibiting: p H meters; densitometers; macro, micro, and ultra micro fluores­ cence meter; linear/log recorders; elec­ tronic integrator. Picker X-Ray C o r p . Nuclear Division 25 South Broadway W h i t e Plains, Ν. Υ.

Exhibiting: Scalers, detectors, scanners, and nuclear instruments. Research Specialties Co. 200 South G a r r a r d Blvd. Richmond, Calif.

Exhibiting: Gas chromatograph modules, automatic chemical analysis systems, paper chromatography and electrophore­ sis apparatus and accessory equipment, water bath shaker, zone melting appara­ tus, micropipets, thin layer chromatog­ raphy equipment, compact gas chroma­ tograph with flame ionization detector. Rinco Instrument Co., Inc. 511 South Prairie St. Greenville, I I I .

Exhibiting: Rinco rotating high vacuum type evaporator, Poly-Cone adapters, Dreiding stereomodels, melting point ap­ paratus, steam generator with electrode heating, water distiller, Kjeldahl with in­ fra-red heaters, nitrogen determining ap­ paratus, infra-red burners, all glass high vacuum evaporator, with continuous feed. Roboz Surgical Instrument Co. 2500 Wisconsin Ave.. N. W . Washington 7. D. C .

Exhibiting: Jung microtome, Reichert medical microscope, surgical instruments for research, Chroma-Grubler biological stains, micro slides and cover glasses.

Today

REINHOLD PUBLISHING CORPORATION Dept. M-859. 430 Park Avenue. New York 22, Ν. Υ.

O . C . Rudolph & Sons, Inc. P. O. Box 446 C a l d w e l l . N. J .

Send me Copy(ies) of BIOCHEMIS­ TRY OF STEROIDS @*6.25 each for 30 days' FREE TRIAL (in U.S.A. only) under the following terms:

Exhibiting: Manual spectropolarimeter, xenon compact arc with magnetic arc control, photoelectric ellipsometer.

Q Purchase price enclosed (Reinhold pays postage) • Bill me (plus postage)

Name

(please print)

Addiess . . . . City & Zone . Stale Circle No. 113 on Readers' Service Card 62 A

•

ANALYTICAL CHEMISTRY

Sanborn Co. 175 Wyman St. W a l t h a m , Mass.

Exhibiting: Sanborn recording systems (single- and multi-channel direct-writing, photographic and tape), monitoring oscil­ loscopes, transducers (pressure, tempera­ ture, etc.), and new preamplifiers, which permit wide range of physiologic applica­ tions.

Sanders Laboratories 83 Uhland St. East Rutherford, N. J .

Exhibiting: Time lapse controls for cinemicrography, high-speed strobes for cinemicrography, Universal stand for microscopes, probes, camera, etc., micro manipulators.

Ε. Η . Sargent and Co. 35 Stern Ave. Springfield, N. J .

Exhibiting: Sargent automatic recording titrator, Mettler H-15 balance, Sargent Model SRL recorder.

Schaar & C o . 7300 W . Montrose Ave. Chicago, I I I .

Exhibiting: New chromatography items, special laboratory pumps-circulating and infusion, single pan speed balances, rotat­ ing film evaporators, stereo models, linearlog recorder all glass evaporator and ex­ traction svstem.

Scientific Glass Apparatus Co., Inc. 100 Lakewood T e r r a c e Bloomfield, N. J .

Exhibiting: SGA Teflon adjustable flow stopcock with " N o - L u b " shell, SGA in­ terchangeable specialties, microware, Filomatic sample diluter, Coleman Jr. Model 6c spectrophotometer, Model 21 flame photometer, Coleman Autoflow sample handling system, Labline #3080 Magnestir bath, Adjustatherm thermometer, new rapid accurate micro-buret.

Scientific Industries, Inc. 2 2 0 - 0 5 97th A v e . Queens Village L. I., New York

Exhibiting: Special types of laboratory apparatus including Vortex mixers for tubes and separatory funnels with new adaptation for rotary evaporation with fixed seals, rotators with interchangeable heads and new blood pipet mixer at­ tachment, timers, special syringe attach­ ment for automatic pipeting and sterile filtration; also a new spotter and striper for paper chromatography, the S.I. ultra buret and the well-known Natelson Microgasometer with attachments.

Scientific Products Division 3175 Y St.. N.W. Washington, D.C.

Exhibiting: Hemoscope T E G instru­ m e n t ; Coulter counter, Model B ; Electro-Med Telemitter; Electro-Med ani­ mal respirator (For monitoring and re­ cording responses of small animals) ; and Miscomatic dispenser.

A NEW PRODUCT- A NEW LOOK Servonuelear Corp. 28-21 Astoria Blvd. Long Island City 2. Ν. Υ.

Aerograph Hy-Fi and Hydrogen Generator

Exhibiting: High Voltage paper electro­ phoresis tanks—2 basic tanks will be ex­ hibited. Two High Voltage supplies— 2000 V at 150 ma. and 5000 volts at 300 ma. New 4 π paper chromatogram scan­ ner.

Ivan Sorvall, Inc. Pearl St. Norwalk, Conn. Exhibiting: Sorvall automatic superspeed refrigerated centrifuge, automatic general purpose refrigerated centrifuge, remote and automatic superspeed centri­ fuges, angle, horizontal, virus and blood bag rotors, Szent-Gyorgyi and Blum tubetype continuous flow systems, density gradient manifold, micro to macro homogenizers, ultra-microtomes, automatic pipets, Ribi refrigerated cell fractionator.

The Southern Cross Mfg. Corp. Chambersburg, Pa. Exhibiting: 790 laboratory glassware and amimal cage washer, 700A laboratory glassware and animal room washer, 300B-2 laboratory glassware and animal room washer, rodent water bottle and cage feed cup filling systems.

Spineo Division Beekman Instruments, Inc. 1117 California Ave. Palo Alto, Calif. Exhibiting: New 50,000 rpm Model L preparative ultra-centrifuge with rotor temperature indicator accessory, Type 50 and Type SW39L rotors, quartz tubes, DU scanning attachment, and related density gradient equipment; Yphantis multi-channel cell and equilibrium rotor for Model Ε analytical ultracentrifuge; Model 160 PGA amplifier with p 0 2 , p C 0 2 and p H electrodes, triple cuvette, con­ stant temperature water bath, and pneumatic recorder; and Model SM-2 continuous systolic monitor with pneu­ matic recorder, K-3 filter, control unit, and oscilloscope.

Standard Scientific Supply Corp. 808 Broadway New York 3, Ν. Υ. Exhibiting: Polarotrace, Polaroset, Vacu Pump 10D, Labasco clamps, Flexiflame burner, Nilox apparatus, hydrogen gen­ erator.

The Technicon Co. Chauncey, Ν. Υ.

Exhibiting: Technicon Autoanalyzer, completely automatic chemical analyzer; Autotechnicon for tissue processing and staining, Lab-Aid slide filing cabinets.

HYDROGEN GENERATOR MODEL 650 (Pat. Pend.)

HY-FI MODEL 600

the really COMPLETE ionization detector The Aerograph Hy-FI is a high temperature programming Gas Chromatograph with Hydrogen Flame Ionization detector. With the new Aerograph hydrogen generator, the hydrogen tank, reducing valve, compressed air, filters and complex piping are completely eliminated. Only nitrogen for carrier gas is required to operate this complete high temperature ultra sensitive gas chromatograph—The Hy-FI.

HY-FI

FEATURES

High temperature oven 400°C with fan for air circulation. Great sensitivity and high temperature operation permits analysis of large complex molecules as steroids, antioxidants, waxes, sesquiterpenes, etc.

• Tremendous sensitivity with accurate attenuation over a wide dynamic range. e Insensitivity to water makes the Hy-FI especially useful for biological analysis, as spirits, beer, ferments, vanilla, etc. Price complete $895.00

HYDROGEN GENERATOR FEATURES Adjustable flow rate accurately measured by • Eliminates hazards and problems of tank meter. hydrogen. Baseline stability is equal in all respects to e Continuous operation is recommended— tank hydrogen. simply add distilled water twice each month. Price complete $225.00 PLEASE SEND YOUR SAMPLES FOR FREE ANALYSIS. ALL ORDERS FOR THE HY-FI AND THE HYDROGEN GENERATOR WILL BE PROMPTLY PROCESSED.

W I L K E N S INSTRUMENT & RESEARCH INC. P.O. Box 313, Walnut Creek, Calif. Phone ATlantic 4-7166 Circle No. 138 on Readers' Service Card V O L . 3 3 , N O . 1 0 , SEPTEMBER 1 9 6 1

•

63

A

NIH EXHIBIT

CALIBRATED & CORRELATED

RGI

FLOWMETERS a new concept in FLOW MEASUREMENT • Individually calibrated with air to establish physical constants of meter and yield high precision. • New correlation based on Stokes' law permits calculation of calibration curve for any fluid for which only the density and viscosity are required. • Each meter serialized and supplied with calibration curve for air and water. Special coordinates convert this curve into a straight line. • Specially designed teflon* stops allow standard taper joints with precision bore ends to be attached to meter. " 0 " ring seal makes this connection vacuum t i g h t . " • Permanent ceramic scale and white background makes reading of black glass ball easy and accurate. • Fluid comes in contact with only glass and teflon* — ideal for corrosive fluids. SET OF JOINTS (COMPLETE) SIZE NO. T/S NO.

CAT. NO.

PRICE

1

10/30

F1121

6.90

2

12/30

F1221

7.15

3

14/35

F1321

8.10

4

19/38

F1421

8.70

5

24/40

F1521

9.30

FLOWMETERS, PLAIN ENDS RANGES ML/MIN AIR WATER

SIZE NO.

CAT. NO. PRICE

1-260

.01-5.2

F1100

2

10-1900

0.2-38

F1200

19.35

3

200-12,000

3-290

F1300

19.35

4

1000-36,000

10-850

F1400

23.20

5

3000-77,000

30-1900

F1500

23.55

1

* DuPont trade name for polytetrafluorethytene • * Patent Pending Write for Descriptive literature See your Local Laboratory Supply Dealer

ROGER

1 GREAT NECK ROAD · GREAT NECK, N.Y. Circle No. 111 on Readers' Service Card 64 A

•

ANALYTICAL CHEMISTRY

Exhibiting: New type Thomas-Seligson automatic Pipettor, new model ThomasSchôniger combustion apparatus, simplified "dead stop" Karl Fischer titration unit, Thomas-Hoover melting point apparatus with thermometer illuminator, Thomas bacteriological incubator-paraffin oven, Steers multiple inoculator (Replicator), Palmer physiological clamps, etc., Seligson ammonia diffusion apparatus, Oxford dialyzers, Spinco ultramicro analysis system, Beckman air comparison pycnometer, etc. The Torsion Balance C o . 35 Monhegan St. Clifton. N. J .

Exhibiting: Precision weighing equipment, chromatographic desalter, anaerobic jar, new direct reading Torsion balances. Traeerlab, Inc. 1601 T r a p e l o R d . W a l t h a m , Mass.

Exhibiting: Automatic low background counting systems and accessory equipment. Tri-R Instruments 144-13 Jamaica A v e . Jamaica 35, New York

Exhibiting: Thermistor type temperature indicators, controllers and recorders, magnetic and other stirring equipment, tissue homogenizer-Teflon pestles and tubes with direct and flexible drive apparatus, automatic egg punch, airborne infection apparatus.

G. K. Turner Associates 2524 Pulgas A v e . Palo Alto. Calif.

Exhibiting: Models 110 and 111 fluorometers, and various accessories including flow-cells, micro-cells, radiation dosimeter reader, paper chromatogram reader, uranium assay chamber, fluorescent microscope illuminator.

19.60

Each meter supplied with directions and correlation chart for calculating calibration curve for any fluid whose density and viscosity are known.

GILMONT INSTRUMENTS, INC.

Arthur H. Thomas Co. Vine St. a t Third Philadelphia 5, Pa.

Vanguard Instrument C o . Box 244 La Grange, I I I .

Exhibiting: Model 880 low background Autoscanner, 4 π radio chromatogram scanner. Model 880 ADS automatic data system for quantitation and digital pres­ entation of radioactive zones. Volumatic series fraction collectors for column chromatography. Video Engineering C o . , Inc. 5413 Georgia Ave., N. W . Washington, D. C . Exhibiting:

T V microscopy.

The Virtis Co ., Inc. Gardiner. Ν. Υ.

Exhibiting: VirTis research instruments: 45 & 23 Hi-Speed homogenizers, Extracto-Matic, filtered-air pipet dryer, mechanically refrigerated Freeze-Mobile, Quickseal freeze-drying flasks, sample temperature indicator-controller, photo­ cell tachometer. W a t e r s Associates 45 Franklin St. Framingham, Mass.

Exhibiting: Differential refractometers, liquid chromatography refractometers, flame photometers, laboratory refractom­ eters, in-line process refractometers. The W a t e r s C o r p . P. O. Box 529 Rochester, Minn.

Exhibiting: New linear flow-insensitive blood densitometer, new improved oxi­ meter, new low cost nitrogen gas analy­ zer, new multi-channel automatic switch­ ing thermistor thermometer, and other related instruments. The Welch Scientific C o . 1515 Sedgwick St. Chicago 10, I I I .

Exhibiting: Vacuum pumps, oscilloscopes, densitometers, science charts, balances. Will Corp. Box 1050 Rochester 3, Ν. Υ.

Exhibiting: Precision Dubnoff shaking incubator, Blackstone ultrasonic cleaner, Bronwill Biosonik apparatus, Bronwill Infusometer, Will Gyratherm, Gyratherm Jr., and Dylatherm, Mettler H-5, multi­ purpose balance, Rotocon assemblers, Gillings-Bronwill thin sectioning machine. Wilmot Castle Co. 1777 E . H e n r i e t t a Rd. Rochester 23, Ν. Υ.

Exhibiting: Orthovac sterilizer. Yellow Springs Instruments Co., Inc. P. O. Box 106 Yellow Springs, Ohio

Exhibiting: YSI instruments: Model 30 electronic hematocrit (1st time shown), thermistor-based temperature measure­ ment and control instruments and probes, laboratory recorders, psycho-physiological instruments, blood gas analysis equip­ ment, Model 47 automatic scanning thermometer, SETAR (Serial Events Timer and Recorder). C a r l Zeiss, Inc. 485 Fifth Ave. New York 17, N . Y .

Exhibiting: Research microscopes for brightfield, phase contrast, darkfield, polarized light, fluorescence microscope, photomicrographic apparatus and attach­ ments, spectrophotometer with fluores­ cence and chromatogram attachments, polarimeters, refractometer.