Research Services - American Chemical Society

Apache Chemicals, Inc. Applied Science Labs., Inc. ArRo Labs., Inc. Atlantic Research Corp. -. Avco Corp. Beckman Instruments, Inc. Betz Laboratories,...
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4 Research Services Each service is followed by an alphabetical list of suppliers. Listings of this section begin on page 2761

4

Research Services Classification List

Bold

face

listings

are

subdivided

activation analysis analytical

gas analysis gravimetry •-•• 279LG

bacterimetric analysis

identification of unknowns and contaminants industrial hygiene inorganic fluorine compounds irradiation services

calibration services consulting contract instrumentation crystal growing custom data acquisition, recording systems custom scintillation services and purification custom synthesis custom synthesis of radioactive compounds

plastics

kinetics —279LG mass spectrometry gas analysis mass spectrometry (liquid, solids, gases) measurements — 279LG metal analysis methods development microscopy — 280LG molecular weight, trace analysis Mossbauer analysis service

development of glass educational courses electrochemistry— 278LG electron spectroscopy for chemical analysis elemental analysis —278LG environmental resources management equipment, leasing & renting experimental melting

nuclear chemistry — 280LG nuclear magnetic resonance spectrointerpretation

preparative g.c. preparative scale gel permeation chromatography radiation services radioactive labeling services radioanalytical radioisotope analysis R&D, contract separations, chroma. — 281LG separations, distillation separations, extraction separations, ion exchange separations, precipitation (homogeneous, etc.) spectrometry, absorption —282 LG spectrometry, diffraction, x-ray spectrometry, emission—282LG spectrometry, MR —283LG

optical polishing

temperature-vacuum out-gassing thermal analysis —283LG titrations —283LG tritium labeling

pétrographie examination

zone refining

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276 LG AUGUST 1973

LABORATORY GUIDE

Research Services

ACTIVATION ANALYSIS Aerotest Operations General Electric Co. General Electric Co.. Nuclear Technology & Applications Operations Guif Radiation Technology Inîerex Corp. International Testing Labs., Inc. Kaman Sciences Corp. LFE Environmental Analysis Laboratories MC/B Manufacturing Chemists Teledyne Isotopes (Calif.) Union Carbide Corp., Sterling Forest Research Center

ANALYTICAL Accu-Labs Research, Inc. Advanced Metals Research Corp. Aerotest Operations Alpha Analytical Labs. American Instrument Co. AMETEK/Calmec Anachemia Chemicals, Inc. Analabs, Inc. Analytical Development Corp. Apache Chemicals, Inc. Applied Science Labs., Inc. ArRo Labs., Inc. Atlantic Research Corp. Avco Corp. Beckman Instruments, Inc. Betz Laboratories, Inc. Bowser-Morner Testing Labs., Inc. Brandt Associates, Inc. Calbiochem Cameca Instruments, Inc. R. P. Cargille Labs., Inc. Chicago Spectro Service Lab., Inc Clark Microanalytical Lab. Judith H. Clausen, Ph.D., Consulting Chemist Coors Porcelain Co. Coors Spectro-Chemical Lab. Core Laboratories, Inc. Crobaugh Labs. DeBell & Richardson, Inc. Detroit Testing Laboratory Electronic Associates, Inc. Endocrine Laboratories of Madison, Inc. Environmental Science and Engineering Corp. Extranuclear Labs., Inc. F & J Scientific Ernest F. Fullam, Inc. Galbraith Labs., Inc. GCA Technology Div. Gollob Analytical Service Greenwood Laboratories Gulf Radiation Technology Harris Labs., Inc. R. J. Harvey Instrument Corp The Heusser Instrument Co. Huffman Laboratories, Inc, ICN Chemical & Radioisotope Div. Interex Corp. International Hydronics Corp. International Testing Labs., Inc. Jarrell-Ash Div. Kaman Sciences Corp. Kendall Infrared Laboratories Lachat Chemicals, Inc. Ledoux & Co. LFE Environmental Analysis Laboratories Arthur D. Little, Inc. The London Co. Materials Research Corp. Matheson Gas Products Matthey Bishop, Inc. MC/B Manufacturing Chemists Walter C. McCrone Associates, Inc. McCrone-RCI, Inc. Micro-Analysis, Inc. Micromeritics Instrument Corp. Midwest Research Institute Mine Safety Appliances Co. Morgan-Schaffer Corp. Nanogens National Spectrographs Laboratories. Inc. New England Nuclear Nuclear Materials & Equipment Corp.

LABORATORY GUIDE

Oregon Metallurgical Corp. Orenda, Ltd. Particle Data Laboratories, Ltd. PCR, Inc. Penniman & Browne, Inc. Perkin-Elmer Corp. Phase Separations Ltd. Precision Gas Products, Inc. Princeton Organics, Inc. Rankin Reagent Co. Reliable Chemical Co. Rinehart Labs., Inc. Rockland Instrument Corp. Rosner-Hixson Laboratories Sadtler Research Laboratories, Inc. Scientific Gas Products Inc. Scientific Research Instruments Corp. Scott Research Laboratories, Inc. Shankman Laboratories Shilstone Engineering Testing Laboratory. Inc. Shrader Analytical & Consulting Laboratory, Inc. Simon Research Laboratory Sloan Research Industries Div. A. O. Smith Corp. Foster D. Snell, Inc. Somar Labs., Inc. Spectran Laboratories, Inc. Spectro Products, inc. Stewart Laboratories, Inc. Structure Probe, Inc. Supelco, Inc. Teledyne Isotopes (N.J.) Teledyne Isotopes (Calif.) Tem-Pres Research Div. Union Carbide Corp., Sterling Forest Research Center United StatesTesting Co., Inc. Varian Vacuum Div. Vulcan Laboratories, Inc. Wahl-Henius Institute, Inc. WARF Institute, Inc. WATCON, Inc. Waters Associates Inc. West Coast Technical Service, Inc. Westinghouse Electric Corp. Worthington Biochemical Corp.

BACTERIMETRIC ANALYSIS Galbraith Labs., Inc. Harris Labs., Inc. Ionics, Inc. Nuclear Medical Systems, Inc. Shankman Laboratories Foster D. Snell, Inc.

CALIBRATION SERVICES Bowser-Morner Testing Labs., Inc. Detroit Testing Laboratory ICN Chemical & Radioisotope Div. International Testing Labs., Inc. Leeds & Northrup Co. MACBETH Color & Photometry Penniman & Browne, Inc. Rank Precision Industries, Inc. Foster D. Snell, Inc. Spectran Laboratories, Inc. Stewart Laboratories, Inc. Sunshine Scientific United States Testing Co., Inc.

CONSULTING Accu-Labs Research, Inc. Aerotest Operations Alpha Analytical Labs. Analabs, Inc. Analytical Development Corp. Anderson Development Co. Apache Chemicals, Inc. Applied Plastics Co., inc. Applied Science Labs., Inc. ArRo Labs., Inc. Atlantic Research Corp. Atomic Energy of Canada Ltd. Austin Science Associates, Inc. Barnebey-Cheney

Bet^ Laboratories, Inc. Bjorksten Research Labs., Inc Bowser-Morner Testing Labs., Inc. Brandt Associates, Inc. Cambridge Physical Sciences Cameca Instruments. Inc. Carworth

Cationics, Inc.

Cerac, Inc. Chemical Equipment Corp. Chemical Samples Co. Clark Microanalytical Lab. Judith H. Clausen. Ph.D.. Consulting Chemist Coast Engineering Laboratory Core Laboratories, Inc. Cottrell Environmental Systems Crobaugh Labs. DeBell & Richardson, Inc. Detroit Testing Laboratory Dynatech R/DCo. Endocrine Laboratories of Madison. Inc. Engineered Materials Environmental Science and Engineering Corp. Extranuclear Labs., Inc. F & J Scientific Ernest F. Fullam, Inc. Galbraith Labs., Inc. Gam Rad, Inc. GCA Technology Div. General Technologies Corp. Gollob Analytical Service Greenwood Laboratories Harris Labs., Inc. R. J. Harvey Instrument Corp. Huffman Laboratories, Inc. Humphreys Corp. International Hydronics Corp. International Testing Labs., Inc. Ion Exchange Products, Inc. Johnson-March Corp. Kendall Infrared Laboratories Laboratory Instrument Exchange, Inc. Ledoux & Co. LFE Environmental Analysis Laboratories Arthur D. Little, Inc. Marshallton Research Labs., Inc. MC/B Manufacturing Chemists Walter C. McCrone Associates, Inc. McCrone-RCI, Inc. Mechanical Technology, Inc. M/K Systems, Inc. Monitor Labs., Inc. Morgan-Schaffer Corp. Nuclear Materials & Equipment Corp. Nuclear Medical Systems, Inc. Olson Laboratories, Inc. Particle Data Laboratories, Ltd Pen Kem Co. Penniman & Browne, Inc. PhotoMetrics, Inc. Phys-Chemical Research Corp. Plastics Consulting Associates Polysciences, Inc. Power Applications, Inc. Princeton Aqua Science Princeton Organics, Inc. Process & Instruments Corp. Pro-Tech,Inc. Radiation Facilities, Inc. Rankin Reagent Co. Redlake Corp. Rinehart Labs., Inc. Rocky Mountain Research, Inc. Rosner-Hixson Laboratories Rudolph Instruments Rutherford Research Products Co. Saber Labs.. Inc. Sadtler Research Laboratories, Inc. Schwarz/Mann Science Spectrum, Inc. Scientific Leasing Inc. Scott Research Laboratories, Inc. The Separations Group Shankman Laboratories Shrader Analytical & Consulting Laboratory, Inc. Sigmatron, Inc. Simon Research Laboratory Sloan Research Industries Div. A. O. Smith Corp. Foster D. Snell. Inc. Somar Labs., Inc. Specialty Organics, Inc.

4 Spectran Laboratories, Inc. Spectro Products, Inc, Stewart Laboratories, Inc. Structure Probe, Inc Supelco, Inc. TCS Telco Leasing, Inc. Teledyne Isotopes (Calif.) Terra-Marine Bioresearch United States Testing Co.. Inc. WARF Institute, Inc. Waters Associates Inc. WeatherMeasure Corp. West Coast Technical Service. Inc. Westinghouse Electric Corp. Zeebac Inc.

CONTRACT INSTRUMENTATION ABBOTT, Scientific Products Div. Adams-Smith, Inc. Analytical Instrument Development, Inc. Andros, Inc. Antek Instruments, Inc. Aquatronics, Inc. Avco Corp. Beckman Instruments, Inc. Cambridge Physical Sciences Cameca Instruments, Inc. H. B. Chapman, Jr. & Co. Consolidated Controls Corp. Core Laboratories, Inc. Data Graphics Corp. Detroit Testing Laboratory DEVCO Engineering, Inc. Electro/Mass Laboratory Extranuclear Labs., Inc. Gam Rad, Inc. Gould, Inc., Instrument Systems Div. R. J. Harvey Instrument Corp. Ion Exchange Products, Inc. Ionics, Inc. Leeds & Northrup Co. Arthur D. Little, Inc. Lockwood and McLorie Inc. Marietta Apparatus Co. Maurukas Co., Inc. McCrone-RCI, Inc. Mechanical Technology, Inc. Modern Controls, Inc. Monitor Labs., Inc. Non-Linear Systems, Inc. Particle Data Laboratories, Ltd. PhotoMetrics, Inc. Process & Instruments Corp. Pro-Tech,Inc. Quantachrome Corp. Redlake Corp. Rudolph Instruments Rutherford Research Products Co. Sadtler Research Laboratories, Inc. Scientific Gas Products Inc. Scott Research Laboratories, Inc. Sloan Research Industries Div. Sunshine Scientific TCS Tivian Laboratories, Inc. United States Testing Co., Inc. Vacumetrics, Inc. Valley Forge Instrument Co., Inc. (Pa.) WeatherMeasure Corp. Wescan Instruments, Inc. Wilks Scientific Corp. Yellow Springs Instrument Co., Inc. Zeebac Inc.

CRYSTAL GROWING Apache Chemicals, Inc. Engineered Materials The Harshaw Chemical Co. Heliotek Imanco-Metals Research Arthur D. Little, inc. Optovac. Inc. Packard Instrument Co., Inc. Princeton Organics, Inc. Rank Precision Industries, Inc. Semi-Elements, Inc. Technics, Inc.

AUGUST 1973 277 LG

CO

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CUSTOM DATA ACQUISITION ENVIRONMENTAL RESOURCES MANAGEMENT Terra-Marine Bioresearch V A R - L A C - O I D Chemical Co.

CUSTOM DATA ACQUISTION, recording systems A d a m s - S m i t h , Inc. Baganoff Associates, Inc. C a m b r i d g e Physical Sciences Consolidated Controls Corp. Control Equipment Corp. G o u l d , I n c . , I n s t r u m e n t S y s t e m s Div. I N A X I n s t r u m e n t s Ltd. Leeds & Northrup Co. McCrone-RCI, Inc. Monitor Labs., Inc. Non-Linear S y s t e m s , Inc. P r o c e s s A n a l y z e r s , I n c . (Tex.)

CUSTOM SCINTILLATION SERVICES AND PURIFICATION City C h e m i c a l C o r p . The Harshaw Chemical Co. R. J . H a r v e y I n s t r u m e n t C o r p . I C N C h e m i c a l & R a d i o i s o t o p e Div. Isolab, Inc. New England Nuclear Nuclear Equipment Chemical Corp. Polysciences, Inc. Reliable C h e m i c a l C o . Teledyne Isotopes (N.J.)

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Research O r g a n i c / I n o r g a n i c Chemical Corp. RHO C h e m i c a l C o . Rocky Mountain Research, Inc. R S A Corp. Saber Labs., Inc. Sadtler R e s e a r c h L a b o r a t o r i e s , I n c . Schwarz/Mann F o s t e r D. S n e l l , I n c . Specialty Organics, Inc. S p e c t r u m Medical Industries, Inc. Story C h e m i c a l Corp. Strem Chemicals, Inc. Terra-Marine Bioresearch Tivian Laboratories, Inc. VAR-LAC-OID Chemical Co. Ventron Corp., Alfa Products W A R F Institute, Inc. Willow Brook Laboratories, Inc.

CUSTOM SYNTHESIS (OF RADIOACTIVE COMPOUNDS) A m e r s h a m / S e a r l e Corp. I C N C h e m i c a l & R a d i o i s o t o p e Div. Isolab, Inc. Mallinckrodt Chemical Works, Science P r o d u c t s Div. Mallinckrodt/Nuclear New England Nuclear Nuclear Medical·Systems, Inc. PCR, I n c . Pressure Chemical Co. Rocky Mountain Research, Inc. Schwarz/Mann W A R F Institute, Inc.

CUSTOM SYNTHESIS

DEVELOPMENT OF GLASS

Aldrich Chemical Co., Inc. The Ames Laboratories, Inc. Analabs, Inc. Anderson Development Co. A p a c h e C h e m i c a l s , Inc. Applied Science Labs., Inc. Arapahoe Chemicals Ash Stevens Inc. J . T. B a k e r C h e m i c a l C o . B e c k m a n Instruments, Inc. Bjorksten Research Labs., Inc. Bodman Chemicals Burdick & Jackson Labs., Inc. Cationics, Inc. Cerac, Inc. C h e m i c a l Samples Co. Corco Chemical Corp. DeBell & Richardson, Inc. Diaprep, Inc. Eastern Chemical Eastman Kodak Co., Eastman Organic Chemicals El M o n t e C h e m i c a l C o . Engineered Materials F a r c h a n Div. Fine O r g a n i c s , I n c . Freeman Industries. Inc. Frinton Labs. General Electric Co. M. W . H a r d y & C o . , I n c . Hughes Aircraft Co. The Humphrey Chemical Co. H u m m e l Chemical Co., Inc. I C N C h e m i c a l & R a d i o i s o t o p e Div. Imaginative Alchemy Unlimited lonac Chemical Co.

Corning Glass W o r k s (N.Y.) DeBell & Richardson, Inc. Engineered Materials Hi-Temp Glass Products, Inc. A r t h u r D. Little, I n c . Tivian Laboratories, Inc.

Warrington, Penna., 18976 Phone 215-343-6 Chemicals and Supplies f o r : • Polymer Research • Life Sciences • Electron Microscopy • Custom Synthesis . . . . and m u c h m o r e . . . . Kay-Fries C h e m i c a l s . Inc. Kings Laboratories Lachat Chemicals, Inc. LaMont Laboratories A r t h u r D. Little, I n c . Marshallton Research Labs., Inc. M C / B Manufacturing Chemists Merck Sharp & Dohme Canada Ltd. M e r c k & Co., Inc. Midwest Research Institute M i l e s L a b s . , I n c . , R e s e a r c h Div. Nuclear Medical S y s t e m s , Inc. Nutritional Biochemicals Orgmet, Inc. Ott Div. Ozark-Mahoning Co. PCR, I n c . Pfaltz & B a u e r , I n c . Pharm-Eco Pierce Chemical Co. Polysciences, Inc. Pressure Chemical Co. Princeton Organics, Inc. Regis C h e m i c a l C o . Reliable C h e m i c a l C o .

278 LG AUGUST 1973

EDUCATIONAL COURSES Aerotest Operations Brandt Associates, Inc. J u d i t h H. C l a u s e n , P h . D . , C o n s u l t i n g Chemist Helena Laboratories Leeds & Northrup Co. LFE Environmental Analysis Laboratories The London Co. MACBETH Color & Photometry W a l t e r C. M c C r o n e A s s o c i a t e s , I n c . Mechanical Technology, Inc. MilliporeCorp. M / K Systems, Inc. Morgan-Schaffer Corp. Ohaus Scale Corp. Particle Data Laboratories, Ltd. Plastics C o n s u l t i n g A s s o c i a t e s Power Applications, Inc. Rutherford Research Products Co. Sadtler R e s e a r c h L a b o r a t o r i e s , I n c .

ELECTROCHEMISTRY conductivity Atlantic Research Corp. B e c k m a n I n s t r u m e n t s , Inc. - J u d i t h H. C l a u s e n , P h . D . , C o n s u l t i n g Chemist Harris Labs., Inc. Ionics, Inc. A r t h u r D. L i t t l e , i n c . Merix Chemical Co. National Spectrographic Laboratories, Inc. Tivian Laboratories, Inc. Wescan Instruments, Inc.

coulometry Antek I n s t r u m e n t s , Inc. J u d i t h H. C l a u s e n , P h . D . , C o n s u l t i n g Chemist D O H R M A N N Div. E n v i r o t e c h C o r p . Galbraith Labs., Inc. Harris Labs., Inc. Ionics, Inc. A r t h u r D. L i t t l e , I n c . National Spectrographic Laboratories. Inc. Quantachrome Corp.

electrode kinetics and mechanisms B e c k m a n I n s t r u m e n t s , Inc. J u d i t h H. C l a u s e n , P h . D . , C o n s u l t i n g Chemist

Heliotek Ionics, Inc. A r t h u r D. L i t t l e , I n c .

polarography B e c k m a n Instruments, Inc. J u d i t h H. C l a u s e n , P h . D . , C o n s u l t i n g Chemist Harris Labs., Inc. Ionics, Inc. A r t h u r D. Little, I n c . WARF Institute, Inc. Wescan Instruments, Inc.

Rinehart L a b s . , I n c . Sadtler Research Laboratories, Inc. Scientific Associates, Inc. Shankman Laboratories S l o a n R e s e a r c h I n d u s t r i e s Div. F o s t e r D. S n e l l , I n c . S o m a r Labs., Inc. Spectran Laboratories, Inc. Stewart Laboratories, Inc. Structure Probe, Inc. Tivian Laboratories, Inc. United States Testing Co., Inc. W A R F Institute, Inc. Westinghouse Electric Corp.

organics potentiometry • B e c k m a n Instruments, Inc. J u d i t h H. C l a u s e n , P h . D . , C o n s u l t i n g Chemist Corning Glass W o r k s (Mass.) Galbraith Labs., Inc. Harris L a b s . , I n c . Heliotek Ionics, Inc. A r t h u r D. Little, I n c . Tivian L a b o r a t o r i e s , I n c .

voltammetry J u d i t h H. C l a u s e n , P h . D . , C o n s u l t i n g Chemist Harris L a b s . , I n c . Heliotek Ionics, Inc. A r t h u r D. L i t t l e , I n c . W e s c a n I n s t r u m e n t s , Inc.

ELECTRON SPECTROSCOPY FOR CHEMICAL ANALYSIS Atlantic Research Corp. B e c k m a n Instruments, Inc. LFE E n v i r o n m e n t a l A n a l y s i s L a b o r a t o r i e s M C / B Manufacturing Chemists W a l t e r C. M c C r o n e A s s o c i a t e s , I n c . M c C r o n e - R C I , Inc. Physical Electronics Industries, Inc. U n i t e d S t a t e s T e s t i n g Co., I n c .

ELEMENTAL ANALYSIS inorganics Advanced Metals Research Corp. Aerotest Operations Alpha Analytical Labs. A p a c h e C h e m i c a l s , Inc. ArRo Labs., Inc. Atlantic Research Corp. Avco Corp. Bowser-Morner Testing Labs., Inc. Chicago Spectro Service Lab., Inc. Coors Porcelain Co. Coors S p e c t r o - C h e m i c a l Lab. Core Laboratories, Inc. Corning Glass Works (Mass.) Crobaugh Labs. DeBell & Richardson, Inc. Detroit Testing Laboratory D O H R M A N N Div. E n v i r o t e c h C o r p . Environmental Science and Engineering Corp. Extranuclear Labs., Inc. F & J Scientific Galbraith Labs., Inc. Gollob Analytical Service Gulf R a d i a t i o n T e c h n o l o g y Harris L a b s . , I n c . Huffman Laboratories, Inc. INAX Instruments Ltd. Interex Corp. International Hydronics Corp. International Testing Labs., Inc. J a r r e l t - A s h Div. Ledoux & Co. LFE E n v i r o n m e n t a l A n a l y s i s L a b o r a t o r i e s A r t h u r D. L i t t l e , I n c . M C / B Manufacturing Chemists Monsanto Co. National Spectrographic Laboratories, Inc. Nuclear Equipment Corp. Orenda, Ltd. PCR, I n c . Penniman & Browne, Inc. PhotoMetrics, Inc. Physical Electronics Industries, Inc. Reliable C h e m i c a l C o . Research O r g a n i c / I n o r g a n i c Chemical Corp. Resource Control, Inc.

Aerotest Operations Alpha Analytical Labs. Analabs, Inc. Apache Chemicals, Inc. Atlantic Research Corp. Bowser-Morner Testing Labs., Inc. Chemical Data Systems, Inc. Clark Microanalytical Lab. Crobaugh Labs. Detroit T e s t i n g L a b o r a t o r y D O H R M A N N Div. E n v i r o t e c h C o r p . E x t r a n u c l e a r Labs., I n c . Galbraith Labs., Inc. Gollob Analytical Service Harris Labs., Inc. Huffman Laboratories, Inc. INAX Instruments Ltd. International Hydronics Corp. International Testing Labs., Inc. LFE E n v i r o n m e n t a l A n a l y s i s L a b o r a t o r i e s A r t h u r D. Little, I n c . M C / B Manufacturing Chemists Micro-Analysis, Inc. Monsanto Co. National Spectrographic Laboratories, Inc. Oregon Metallurgical Corp. PCR, I n c . Reliable Chemical Co. Research O r g a n i c / I n o r g a n i c Chemical Corp. Rinehart L a b s . , I n c . Sadtler R e s e a r c h L a b o r a t o r i e s , I n c . Scientific Associates, Inc. Shrader Analytical & Consulting Laboratory, Inc. F o s t e r D. S n e l l , I n c . Stewart Laboratories, Inc. Structure Probe, Inc. United States Testing Co., Inc. W A R F Institute, Inc.

organometallics Aerotest Operations Alpha Analytical Labs. Atlantic Research Corp. B o w s e r - M o r n e r Testing Labs., Inc. Crobaugh Labs. DeBell & Richardson, Inc. Extranuclear Labs., Inc. Galbraith Labs., Inc. Gulf R a d i a t i o n T e c h n o l o g y Huffman Laboratories, Inc. I N A X I n s t r u m e n t s Ltd. International Testing Labs., Inc. M C / B Manufacturing Chemists Micro-Analysis, Inc. National Spectrographic Laboratories, Inc. Oregon Metallurgical Corp. PCR, I n c . Reliable C h e m i c a l C o . Research Organic/Inorganic Chemical Corp. Sadtler Research Laboratories, Inc. Scientific Associates, Inc. F o s t e r D. S n e l l , I n c . Stewart Laboratories, Inc. United States Testing Co., Inc. W A R F Institute, Inc.

ENVIRONMENTAL RESOURCES MANAGEMENT ArRo Labs., Inc. Barnebey-Cheney B e c k m a n Instruments, Inc. Betz L a b o r a t o r i e s , I n c . Bowser-Morner Testing Labs., Inc. J u d i t h H. C l a u s e n , P h . D . , C o n s u l t i n g Chemist Core Laboratories, Inc. Cottrell Environmental Systems Galbraith Labs., Inc. Harris Labs., Inc. Industrial Acoustics Co., Inc. International Hydronics Corp. Ionics, Inc. Johnson-March Corp. LFE E n v i r o n m e n t a l A n a l y s i s L a b o r a t o r i e s

LABORATORY GUIDE

ENVIRONMENTAL RESOURCES MANAGEMENT MEASUREMENTS Arthur D. Little, Inc. Walter C- McCrone Associates, Inc. Midwest Research institute Mine Safety Appliances Co. Monsanto Co. MSA Research Corp. Particle Data Laboratories, Ltd. Princeton Aqua Science Resource Control, Inc. Royco Instruments, Inc. Scott Research Laboratories, Inc. Simon Research Laboratory Foster D. Snell, Inc. Thermo-Systems, Inc. WeatherMeasure Corp.

EQUIPMENT, leasing and renting Atomic Energy of Canada Ltd. Barnebey-Cheney Bartlett-Snow Products Beckman Instruments, Inc. Core Laboratories, Inc. Delta Scientific Corp. Engineered Materials Gould, Inc., Instrument Systems Div. Jarrell-Ash Div. Kaman Sciences Corp. Laboratory Instrument Exchange, Inc. Nuclear Equipment Corp. Pro-Tech, Inc. Pulvair Corp. Redlake Corp. Scientific Leasing Inc. Sunshine Scientific Telco Leasing, inc. WeatherMeasure Corp.

EXPERIMENTAL MELTING Crobaugh Labs. Engineered Materials Glidden-Durkee Oregon Metallurgical Corp. VAR-LAC-OID Chemical Co.

GAS ANALYSIS Accu-Labs Research, Inc. Andros, Inc. Atlantic Research Corp. Baganoff Associates, Inc. Barnebey-Cheney Beckman Instruments, Inc. Bowser-Morner Testing Labs., Inc. Chemical Data Systems, Inc. Core Laboratories, Inc. Crobaugh Labs. DeBell & Richardson, Inc. Detroit Testing Laboratory DEVCO Engineering, Inc. Electronic Associates, Inc. Environmental Science and Engineering Corp. Extranuclear Labs., Inc. F & J Scientific Gollob Analytical Service Greenwood Laboratories R.J. Harvey Instrument Corp. International Testing Labs., Inc. LFE Environmental Analysis Laboratories

GAS ANALYSIS Fast — Accurate Service WEST COAST TECHNICAL SERVICE Inc. 17605 Fabrica Way, Suite Dj Cerritos. California 90701 Telephone (213) 287-0926 After 7-73(213) 921-98311 Arthur D. Little, Inc. Matheson Gas Products McMillan Electronics Corp. Midwest Research Institute Morgan-Schaffer Corp. National Spectrographic Laboratories, Inc. Olson Laboratories, Inc. Particle Data Laboratories, Ltd. Penniman & Browne, Inc. Precision Gas Products, Inc. Quantachrome Corp. Rinehart Labs., Inc. Royco Instruments, Inc. Sadtler Research Laboratories, Inc. Scientific Research Instruments Corp. Scott Research Laboratories, Inc. Shrader Analytical & Consulting Laboratory, Inc. Foster D. Snell, Inc. Spectran Laboratories, Inc. Stewart Laboratories, Inc. Thermco Instrument Corp. United States Testing Co., Inc.

LABORATORY GUIDE

Vacumetrics, Inc. WARF Institute, Inc. WeatherMeasure Corp. West Coast Technical Service, Inc. Westinghouse Electric Corp. Wilks Scientific Corp.

GRAVIMETRY

Structure Probe. Inc. Thermco Instrument Corp. Tivian Laboratories, Inc. United States Testing Co., Inc. Varian Vacuum Div. WARF Institute, Inc. West Coast Technical Service, Inc. Westinghouse Electric Corp.

combustion

INDUSTRIAL HYGIENE

Avco Corp. Bowser-Morner Testing Labs., Inc. Clark Microanalytical Lab. DeBell & Richardson, Inc. F & J Scientific Galbraith Labs., Inc. Huffman Laboratories, Inc. International Hydronics Corp. MC/B Manufacturing Chemists Penniman & Browne, Inc. Foster D. Snell, Inc.

Beckman Instruments, Inc. Betz Laboratories, Inc. Coors Spectro-Chemical Lab. Environmental Science and Engineering Corp. GCA Technology Div. Gollob Analytical Service Harris Labs., Inc. Industrial Acoustics Co., Inc. Walter C. McCrone Associates, Inc. Mine Safety Appliances Co. National Spectrographic Laboratories, Inc. Particle Data Laboratories, Ltd. Rosner-Hixson Laboratories Royco Instruments, Inc. Scientific Gas Products Inc. Scott Research Laboratories, Inc. Shankman Laboratories Foster D. Snell, Inc. Stewart Laboratories, Inc. Thermo-Systems. Inc. Tivian Laboratories, Inc. WeatherMeasure Corp.

electrogravimetry Avco Corp. Clark Microanalytical Lab. Detroit Testing Laboratory Galbraith Labs , Inc. Huffman Laboratories, Inc. MC/B Manufacturing Chemists

precipitation Avco Corp. Bowser-Morner Testing Labs., Inc. Clark Microanalytical Lab. DeBell & Richardson, Inc. Detroit Testing Laboratory F & J Scientific Galbraith Labs., Inc. Huffman Laboratories, Inc. International Testing Labs., Inc. MC/B Manufacturing Chemists Penniman & Browne, Inc. Foster D. Snell, Inc. Stewart Laboratories, Inc. Tivian Laboratories, Inc.

IDENTIFICATION OF UNKNOWNS AND CONTAMINANTS Accu-Labs Research, Inc. Advanced Meiais Research Corp. Alpha Analytical Labs. Analytical Development Corp. Apache Chemicals, Inc. Applied Science Labs., Inc. Atlantic Research Corp. Avco Corp. Beckman Instruments, Inc. Betz Laboratories, Inc. Bowser-Morner Testing Labs., Inc. Brandt Associates, Inc. Chicago Spectro Service Lab., Inc. Clark Microanalytical Lab. Judith H. Clausen, Ph.D., Consulting Chemist Coors Porcelain Co. Coors Spectro-Chemical Lab. Crobaugh Labs. DeBell & Richardson, Inc. Detroit Testing Laboratory Galbraith Labs., Inc. Gollob Analytical Service Greenwood Laboratories Gulf Radiation Technology Harris Labs., Inc. R. J. Harvey Instrument Corp. Huffman Laboratories, Inc. International Testing Labs., Inc. Jarrell-Ash Div. Kendall Infrared Laboratories Lachat Chemicals, inc. LFE Environmental Analysis Laboratories Arthur D. Little, Inc. MC/B Manufacturing Chemists Walter C. McCrone Associates, Inc. McCrone-RCI, Inc. Midwest Research Institute Morgan-Schaffer Corp. Penniman & Browne, Inc. PhotoMetrics, Inc. Rankin Reagent Co. Rinehart Labs., Inc. Rosner-Hixson Laboratories Royco Instruments, Inc. Sadtler Research Laboratories, Inc. Shankman Laboratories Shrader Analytical & Consulting Laboratory, Inc. Simon Research Laboratory Sloan Research Industries Div. Foster D. Snell, Inc. Spectran Laboratories, Inc. Stewart Laboratories, Inc.

INORGANIC FLUORINE COMPOUNDS Accron Industries, Inc. Bodman Chemicals Cationics, Inc. Galbraith Labs., Inc. International Testing Labs., Inc. Ozark-Mahoning Co. PCR, Inc. Foster D. Snell, Inc. Tivian Laboratories, Inc. VAR-LAC-OID Chemical Co. Westinghouse Electric Corp.

Electronic Associates, Inc. Extranuclear Labs., Inc. Gollob Analytical Service International Testing Labs., Inc. Arthur D. Little, Inc. Morgan-Schaffer Corp. Nuclide Corp. Precision Gas Products, Inc. Process & Instruments Corp. Scientific Gas Products Inc. Scientific Research Instruments Corp. Shrader Analytical & Consulting Laboratory, Inc. Sloan Research Industries Div. Teledyne Isotopes (N.J.) Vacumetrics, Inc. West Coast Technical Service, Inc. Westinghouse Electric Corp.

MASS SPECTROMETRY (gas chrom. effluent) Atlantic Research Corp. The Bendix Corp., Scientific Instruments & Equipment Plant Electronic Associates, Inc. Finnigan Corp. Gollob Analytical Service

GAS CHROMATOGRAPHY— MASS SPECTROMETRY Fast — Accurate Service WEST COAST TECHNICAL SERVICE Inc. 17605 Fabrica Way, Suite D | Cerritos. California 90701 I Telephone (213)287-09261 After 7-73(213) 921-9831 f International Testing Labs., Inc. Arthur D. Little, Inc. Walter C. McCrone Associates, Inc. McCrone-RCI, Inc. Morgan-Schaffer Corp. Nuclide Corp. Scientific Research Instruments Corp. Shrader Analytical & Consulting Laboratory, Inc. Sloan Research Industries Div. West Coast Technical Service, Inc.

IRRADIATION SERVICES Aerotest Operations Atomic Energy of Canada Ltd. EON General Electric Co. General Electric Co., Nuclear Technology & Applications Operations Gulf Radiation Technology ICN Chemical & Radioisotope Div. Kaman Sciences Corp. New England Nuclear Nuclear Equipment Chemical Corp. Nuclear Materials & Equipment Corp. Radiation Dynamics, Inc. Radiation Facilities, Inc. Union Carbide Corp , Sterling Forest Research Center

KINETICS catalytic Atlantic Research Corp. Calbiochem Chemical Data Systems, Inc. Arthur D. Little, Inc. Reliable Chemical Co.

differential reaction rate Atlantic Research Corp. Calbiochem Chemical Data Systems, Inc. Arthur D. Little. Inc. Reliable Chemical Co.

initial reaction rate Atlantic Research Corp, Calbiochem Chemical Data Systems, Inc. Arthur D. Little, Inc. Reliable Chemical Co.

MASS SPECTROMETRY GAS ANALYSIS Atlantic Research Corp. The Bendix Corp., Scientific Instruments & Equipment Plant

MASS SPECTROMETRY (liquid, solids, gases) Accu-Labs Research, inc. Atlantic Research Corp. Avco Corp. The Bendix Corp., Scientific Instruments & Equipment Plant Cameca Instruments, Inc. Electronic Associates, Inc. Extranuclear Labs., Inc. Finnigan Corp. GCA Technology Div. Gollob Analytical Service International Testing Labs., Inc. Ledoux & Co. LFE Environmental Analysis Laboratories Arthur D. Little, Inc. Midwest Research Institute Morgan-Schaffer Corp. Nuclide Corp.

MASS SPECTROMETRY Fast — Accurate Service WEST COAST TECHNICAL SERVICE Inc. 17605 Fabrica Way, Suite Dl Cerritos. California 90701 Telephone (213) 287-0926 After 7-73(213) 921-9831 Scientific Research Instruments Corp. Shrader Analytical S Consulting Laboratory, Inc. Sloan Research Industries Div. West Coast Technical Service, Inc.

MEASUREMENTS density Alpha Analytical Labs. American Instrument Co. Atlantic Research Corp. Bowser-Morner Testing Labs., Inc. R. Ρ CargilleLabs., Inc. ClarK Microanalytical Lab. Coors Porcelain Co. Coors Spectro-Chemical Lab. Core Laboratories, Inc. Crobaugh Labs.

AUGUST 1973 279 LG

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MEASUREMENTS OPTICAL POLISHING DeBell & Richardson, Inc. Detroit Testing Laboratory Dynatech R / D C o . F & J Scientific International Testing Labs., Inc. Kaman Sciences Corp. A r t h u r D. Little, I n c . M A C B E T H Color & P h o t o m e t r y M C / B Manufacturing Chemists Micromeritics Instrument Corp. PCR, I n c . Penniman & Browne, Inc. Sadtler Research Laboratories, Inc. Foster D. S n e l l , I n c . Spatial Data S y s t e m s , Inc. United States Testing Co., Inc. W A R F Institute, Inc. Westinghouse Electric Corp.

homogeneity Huffman Laboratories, Inc. M / K Systems, Inc. F o s t e r D. S n e l l , I n c . Structure Probe, Inc. United States Testing Co., Inc. W A R F Institute, Inc. Westinghouse Electric Corp.

index, refractive Atlantic Research Corp. Clark Microanalytical Lab. Detroit Testing Laboratory Huffman Laboratories, Inc. International Testing Labs., Inc. National Spectrographic Laboratories, Inc. Sadtler Research Laboratories, Inc. F o s t e r D. S n e l l , I n c .

particle size (Ο

δ

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A m e r i c a n Instrument Co. Atlantic Research Corp. Bowser-Morner Testing Labs., Inc. Cerac, Inc. Coors S p e c t r o - C h e m i c a l Lab. Core Laboratories, Inc. Detroit Testing Laboratory Donaldson Co. F & J Scientific Filterite Corp. Ernest F. F u l l a m , I n c . International Testing Labs., Inc. LFE E n v i r o n m e n t a l A n a l y s i s L a b o r a t o r i e s M C / B Manufacturing Chemists Micromeritics Instrument Corp. Millipore Corp. National Spectrographic Laboratories, Inc. Orenda, Ltd. Particle Data Laboratories, Ltd. Penniman & Browne, Inc. PhotoMetrics, Inc. Quantachrome Corp. Royco Instruments, Inc. S c i e n c e S p e c t r u m , Inc. S l o a n R e s e a r c h I n d u s t r i e s Div. F o s t e r D. S n e l l , I n c . Structure Probe, Inc. Thermo-Systems, Inc. United States Testing C o . , Inc. Volu-Sol Chemical & Manufacturing Co. WeatherMeasure Corp. Westinghouse Electric Corp,

porosimetry American Instrument Co. B o w s e r - M o r n e r T e s t i n g L a b s . , Inc Core Laboratories, Inc. Micromeritics Instrument Corp. Particle Data Laboratories, Ltd. Ruska Instrument Corp. Foster D. S n e l l , I n c .

spectral transmittance American Instrument Co. Atlantic Research Corp. B e c k m a n Instruments, Inc. Bowser-Morner Testing Labs., Inc. DeBell & Richardson, Inc. Kendall Infrared Laboratories A r t h u r D. Little, I n c . MACBETH Color & Photometry M C / B Manufacturing Chemists National Spectrographic Laboratories, Inc. Rinehart L a b s . , I n c . Rudolph Instruments Sadtler Research Laboratories, Inc. F o s t e r D. S n e l l , I n c . United States Testing Co., Inc. W A R F Institute, Inc. Westinghouse Electric Corp.

280 LG AUGUST 1973

surface area American Instrument Co. Atlantic Research Corp. Barnebey-Cheney "Bowser-Morner Testing Labs., Inc. Coors S p e c t r o - C h e m i c a l Lab. Detroit Testing Laboratory Mechanical Technology, Inc. Micromeritics Instrument Corp. M / K Systems, Inc. Particle Data Laboratories, Ltd. Royco Instruments, Inc.

viscosity Atlantic Research Corp. Bico, Inc. Bowser-Morner Testing Labs., Inc. Brookfield Engineering Labs., Inc. R. P. C a r g i l l e L a b s . , I n c . Coors Porcelain Co. Coors S p e c t r o - C h e m i c a l Lab. Core Laboratories, Inc. Crobaugh Labs. DeBell & Richardson, Inc. Detroit T e s t i n g L a b o r a t o r y Dynatech R / D C o . Ferranti Electric, Inc. Filterite C o r p . G a m Rad, Inc. Harris Labs., Inc. International Testing Labs., Inc. Kaltec Scientific Instrument, Inc. Kendall Infrared Laboratories Monsanto Co. National Spectrographic Laboratories, Inc. Norcross Corp. PCR, I n c . P e n n i m a n & Bro.wne. I n c . Ruska Instrument Corp. F o s t e r D. S n e l l , I n c . Sunshine Scientific United States Testing Co., Inc. WARF Institute, Inc. Wescan I n s t r u m e n t s , Inc. Westinghouse Electric Corp.

METAL ANALYSIS Accu-Labs Research, Inc. Alpha Analytical Labs. A p a c h e C h e m i c a l s , Inc. ArRo Labs., Inc. Atlantic Research Corp. Avco Corp. B o w s e r - M o r n e r Testing Labs., Inc. Chicago Spectro Service Lab., Inc. J u d i t h H. C l a u s e n , P h . D . , C o n s u l t i n g Chemist Coors Porcelain Co. Coors Spectro-Chemical Lab. Core Laboratories, Inc. Corning Glass Works (Mass.) Crobaugh Labs. Delsen Corp. Detroit Testing Laboratory Environmental S c i e n c e and Engineering Corp. F & J Scientific Galbraith Labs., Inc. G C A T e c h n o l o g y Div. Gulf Radiation Technology Huffman Laboratories, Inc. International Hydronics Corp. International Testing Labs., Inc. J a r r e l l - A s h Div. Ledoux 8 Co. LFE Environmental Analysis Laboratories A r t h u r D. L i t t l e , I n c . M i n e Safety A p p l i a n c e s C o . National Spectrographic Laboratories, Inc. Oregon Metallurgical Corp. Orenda, Ltd. Penniman & B r o w n e , Inc. PhotoMetrics, Inc. Reliable C h e m i c a l C o . Sadtler R e s e a r c h L a b o r a t o r i e s , I n c . Shankman Laboratories S l o a n R e s e a r c h I n d u s t r i e s Div. A. O. S m i t h C o r p . F o s t e r D. S n e l l , I n c . Spectran Laboratories, Inc. Spex I n d u s t r i e s , I n c . Stewart Laboratories, Inc. Structure Probe, Inc. Tescom Corp. Tivian Laboratories, Inc. United States Testing Co., inc. W A R F Institute, Inc, West Coast Technical Service, Inc. Westinghouse Electric Corp.

METHODS DEVELOPMENT Accu-Labs Research, Inc. Alpha Analytical Labs

Analytical Development Corp. Analytical Instrument Development, Inc. A p a c h e C h e m i c a l s , Inc. Atlantic Research Corp. Avco Corp. J u d i t h H. C l a u s e n , P h . D . , C o n s u l t i n g Chemist Core Laboratories, Inc. Corning Glass Works (Mass.) Crobaugh Labs. DeBell & Richardson, Inc. Detroit Testing Laboratory Dynatech R / D C o . Environmental Science and Engineering Corp. F & J Scientific Galbraith Labs., Inc. Greenwood Laboratories Harris Labs., Inc. Heliotek Huffman Laboratories, Inc. International Testing Labs.. Inc. Ionics, Inc. Lachat C h e m i c a l s , Inc. Ledoux & Co. LFE E n v i r o n m e n t a l A n a l y s i s L a b o r a t o r i e s A r t h u r D. Little, I n c . Morgan-Schaffer Corp. National Spectrographic Laboratories, Inc. PCR, I n c . Process & Instruments Corp. Rankin Reagent Co. Reliable C h e m i c a l C o . Rosner-Hixson Laboratories Sadtler R e s e a r c h L a b o r a t o r i e s , Inc. Science S p e c t r u m , Inc. Shankman Laboratories S l o a n R e s e a r c h I n d u s t r i e s Div. Foster D. S n e l l , I n c . Spectran Laboratories, Inc. Spectro Products, Inc. Stewart Laboratories, Inc. Structure Probe, Inc. TCS

Penniman & B r o w n e , Inc. PhotoMetrics, Inc. Polysciences, Inc. Redlake Corp. S l o a n R e s e a r c h I n d u s t r i e s Div. F o s t e r D. S n e l l , I n c . Structure Probe, Inc. T e c h n i c s , Inc. United States Testing Co., Inc. WARF Institute, Inc. Westinghouse Electric Corp.

Tivian Laboratories, Inc. WARF Institute, Inc. West C o a s t T e c h n i c a l S e r v i c e , I n c Westinghouse Electric Corp.

Atlantic Research Corp. Austin Science Associates, Inc. ICN C h e m i c a l & R a d i o i s o t o p e Div. New England Nuclear

MOLECULAR WEIGHT, trace analysis Accu-Labs Research, Inc. ArRo Labs., Inc. Atlantic Research Corp.

Avco Corp. Clark Microanalytical Lab. Core Laboratories, Inc. Crobaugh Labs. DeBell & Richardson, Inc. Galbraith Labs., Inc. Greenwood Laboratories Harris L a b s . , I n c . Huffman Laboratories, Inc. A r t h u r D. Little, I n c . Morgan-Schaffer Corp. National Spectrographic Laboratories, Inc. Shrader Analytical & Consulting Laboratory, inc. Foster D. S n e l l , I n c . United States Testing Co., Inc. Wescan Instruments, Inc. W e s t C o a s t T e c h n i c a l S e r v i c e , Inc.

MOSSBAUER ANALYSIS SERVICE

MICROSCOPY

NUCLEAR CHEMISTRY

electron

activation analysis

Advanced Metals Research Corp. C a m e c a Instruments, Inc. Coors Porcelain Co. Delaware Scientific Labs., Inc. Elektros Inc. Fiske Associates, Inc. Ernest F. F u l l a m , I n c . LFE E n v i r o n m e n t a l A n a l y s i s L a b o r a t o r i e s A r t h u r D. Little, I n c .

Aerotest Operations General Electric Co. General Electric Co., Nuclear Technology & Applications Operations Gulf R a d i a t i o n T e c h n o l o g y Interex Corp. International Testing Labs., Inc. Kaman Sciences Corp. LFE E n v i r o n m e n t a l A n a l y s i s L a b o r a t o r i e s T e l e d y n e I s o t o p e s (Calif.) U n i o n C a r b i d e C o r p . , S t e r l i n g Forest Research Center

S T R U C T U R E P R O B E , INC. Specialists in Materials Research

'

ANALYTICAL SERVICES

N

Scanning Electron Microscopy with Electron Probe Analysis, X-ray Diffraction. Transmission Electron Microscopy, and I.R. Spectroscopy 535 E. Gay St., West Chester, Pa. (215) 436-5400 Walter C. M c C r o n e Associates. Inc. McCrone-RCI. Inc. Microbiological Associates, Inc. Nuclear Medical Systems, Inc. Particle Data Laboratories, Ltd. PhotoMetrics, Inc. Polysciences, Inc. Sloan R e s e a r c h I n d u s t r i e s Div. Structure Probe, Inc. Technics, Inc.

optical Advanced Metals Research Corp. Atlantic Research Corp. B e c k m a n Instruments, Inc. Bowser-Morner Testing Labs., Inc. Coors Porcelain Co. Coors S p e c t r o - C h e m i c a l Lab. Crobaugh Labs. DeBell & Richardson, Inc. Delaware Scientific Labs., Inc. Delsen Corp. Detroit Testing Laboratory F & J Scientific Ernest F. F u l l a m , I n c . General Technologies Corp. Harris Labs., Inc. LFE E n v i r o n m e n t a l A n a l y s i s L a b o r a t o r i e s A r t h u r D. L i t t l e , I n c . W a l t e r C. M c C r o n e A s s o c i a t e s , I n c . McCrone-RCI, Inc. National Spectrographic Laboratories, Inc. Nuclear Medical Systems, inc. Particle Data Laboratories, Ltd.

radiochemistry Aerotest Operations Avco Corp.

General Electric Co. General Electric Co., Nuclear Technology & Applications Operations Gulf R a d i a t i o n T e c h n o l o g y I C N C h e m i c a l & R a d i o i s o t o p e Div.

Interex Corp. Ledoux & Co. LFE Environmental Analysis Laboratories Mall i n c k r o d t / N u c l e a r M i n e Safety A p p l i a n c e s C o . New England Nuclear Nuclear Medical Systems, Inc. Schwarz/Mann S p e c t r u m M e d i c a l I n d u s t r i e s , Inc. T e l e d y n e I s o t o p e s (Calif.) U n i o n C a r b i d e C o r p . , S t e r l i n g Forest Research Center United States Testing Co., Inc.

NUCLEAR MAGNETIC RESONANCE SPECTROINTERPRETATION A r t h u r D. L i t t l e , I n c . Midwest Research Institute Morgan-Schaffer Corp. S a d t l e r R e s e a r c h L a b o r a t o r i e s , Inc. Shrader Analytical & Consulting Laboratory, Inc. Simon Research Laboratory Stonier I s o t o p e C h e m i c a l s , I n c .

OPTICAL POLISHING Gaertner Scientific Corp. The Harshaw Chemical Co.

LABORATORY GUIDE

OPTICAL POLISHING SEPARATIONS, CHROMATOGRAPHY R. J. Harvey Instrument Corp. Lenox Instrument Co. Rank Precision Industries, Inc. Rudolph Instruments Spectran Laboratories, Inc. Technics, Inc.

PETROGRAPHIC EXAMINATION Core Laboratories, Inc. General Technologies Corp. Arthur D. Little, Inc. Nuclide Corp. Nuclide Corp., AGV Div.

PLASTICS ArRo Labs., Inc. Bowser-Morner Testing Labs., Inc. Cadillac Plastic & Chemical Co. H. B. Chapman, Jr. &Co. Chemplast. Inc. DeBell & Richardson, Inc. Delsen Corp. Detroit Testing Laboratory Dynatech R/D Co. Electronized Chemicals Corp. General Technologies Corp, R. J. Harvey Instrument Corp. Huffman Laboratories. Inc. Arthur D. Little, Inc. Nuclear Enterprises, Inc. Plastics Consulting Associates Polysciences, Inc. Pressure Chemical Co. Rinehart Labs., Inc, Rutherford Research Products Co. Sadtler Research Laboratories, Inc. Simon Research Laboratory Foster D. Snell, Inc. Structure Probe, Inc. Tivian Laboratories. Inc. United States Testing Co., Inc. West Coast Technical Service, Inc.

PREPARATIVE, G.C. Abcor, Inc. Applied Science Labs., Inc. Castle Co. DeBell & Richardson, Inc. Detroit Testing Laboratory General Electric Co. Harris Labs.. Inc. R. J. Harvey Instrument Corp. LFE Environmental Analysis Laboratories Phase Separations Ltd. Precision Gas Products. Inc. Reliable Chemical Co. Sadtler Research Laboratories, Inc. Schwarz/Mann Foster D'. Snell, Inc.

PREPARATIVE, SCALE GEL PERMEATION CHROMATOGRAPHY Abcor, Inc. DeBell & Richardson. Inc. Harris Labs., Inc. Pharmacia Fine Chemicals, Inc Reliable Chemical Co. Waters Associates Inc.

RADIATION SERVICES Electronized Chemicals Corp. General Electric Co., Nuclear Technology & Applications Operations ICN Chemical & Radioisotope Div. New England Nuclear

RADIOACTIVE LABELING SERVICES Applied Science Labs., Inc. Calbiochem General Electric Co. ICN Chemical & Radioisotope Div. Isolab, Inc. Mallinckrodt Chemical Works, Science Products Div. Mallinckrodt/Nuclear New England Nuclear Nuclear Equipment Chemical Corp. Nuclear Medical Systems, Inc. Schwarz/Mann Scientific Gas Products Inc. Spectrum Medical Industries, Inc.

LABORATORY

GUIDE

RADIOANALYTICAL Aerotest Operations Applied Science Labs., Inc. Ave ο Corp. General Electric Co. General Electric Co., Nuclear Technology & Applications Operations Gollob Analytical Service Gulf Radiation Technology Harris Labs., Inc. ICN Chemical & Radioisotope Div, Interex Corp. Isolab, Inc. Ledoux & Co. LFE Environmental Analysis Laboratories Mallinckrodt/Nuclear Mine Safety Appliances Co. MSA Research Corp. New England Nuclear Nuclear Equipment Chemical Corp. Nuclear Medical Systems, Inc. Teledyne isotopes (N.J.) Teledyne Isotopes (Calif.) Union Carbide Corp., Sterling Forest Research Center United States Testing Co., Inc.

RADIOISOTOPE ANALYSIS Aerotest Operations Avco Corp. Beckman Instruments, Inc. Eberline Instrument Corp. Endocrine Laboratories of Madison, Inc. General Electric Co. General Electric Co., Nuclear Technology & Applications Operations Gollob Analytical Service Gulf Radiation Technology Harris Labs., Inc, ICN Chemical & Radioisotope Div. Interex Corp, Isolab, Inc. Ledoux & Co. LFE Environmental Analysis Laboratories Mallinckrodt/Nuclear MSA Research Corp. New England Nuclear Nuclear Equipment Chemical Corp. Nuclear Medical Systems, Inc. Radiation Facilities, Inc. Redlake Corp. Rosner-Hixson Laboratories Teledyne Isotopes (N.J.) Teledyne Isotopes (Calif) Union Carbide Corp., Sterling Forest Research Center

R&D, contract Abcor, Inc. Aerotest Operations Aldrich Chemical Co.. Inc. Analytical Development Corp. Andros, Inc. Apache Chemicals. Inc. Atlantic Research Corp. Austin Science Associates, Inc. Barn ebey-Cheney Battelle Memorial Institute Beckman Instruments. Inc. Bjorksten Research Labs., Inc. Burdick & Jackson Labs., Inc. Cambridge Physical Sciences Cationics, Inc. Judith H. Clausen, Ph.D., Consulting Chemist Core Laboratories, Inc. DeBell & Richardson, Inc. Detroit Testing Laboratory Dynatech R/D Co. Electronized Chemicals Corp. Endocrine Laboratories of Madison, Inc. Extranuclear Labs., Inc. Galbraith Labs., Inc. Gam Rad, Inc. GCA Technology Div. General Electric Co., Nuclear Technology & Applications Operations General Technologies Corp. Greenwood Laboratories Gulf Radiation Technology Harris Labs., Inc. R. J. Harvey Instrument Corp. Huffman Laboratories, Inc. ICN Chemical & Radioisotope Div. Ionics, Inc. Koslow Scientific Co. Ledoux & Co. LFE Environmental Analysis Laboratories Arthur D. Little, Inc. Marietta Apparatus Co. McCrone-RCI, Inc. Mechanical Technology, Inc. Mine Safety Appliances Co. M/K Systems, Inc. Modern Controls, Inc. Morgan-Schaffer Corp. MSA Research Corp. New England Nuclear

Nuclear Equipment Corp. Nuclear Medical Systems, Inc. Olson Laboratories, Inc. Oregon Metallurgical Corp, Ozark-Mahoning Co. Particle Data Laboratories, Ltd. PCR, Inc. Pen Kem Co. PhotoMetrics, Inc. Phys-Chemicai Research Corp, Plastics Consulting Associates Polysciences, Inc. Pressure Chemical Co. Princeton Organics, Inc. Process & Instruments Corp. Pro-Tech, Inc. Quantachrome Corp. Redlake Corp. Regis Chemical Co. Reliable Chemical Co. Rinehart Labs., Inc. Rocky Mountain Research, Inc. Rosner-Hixson Laboratories Rutherford Research Products Co. Saber Labs., Inc. Sadtler Research Laboratories, Inc. Science Spectrum, Inc. Scott Research Laboratories, Inc. Sigmatron, Inc. Simon Research Laboratory Foster D. Snell, Inc. Spectran Laboratories, Inc. Stewart Laboratories, Inc. Strem Chemicals, Inc. Structure Probe, Inc. Teledyne Isotopes (Calif.) Terra-Marine Bioresearch Tivian Laboratories, Inc. United States Testing Co., Inc. Universal Water Corp. WARF Institute, Inc. West Coast Technical Service, Inc. Westinghouse Electric Corp. Willow Brook Laboratories, Inc.

SEPARATIONS, CHROMATOGRAPHY adsorption (column) Abcor, Inc. Analabs, Inc. Analytical Development Corp. Applied Science Labs., Inc. Atlantic Research Corp. Barnebey-Cheney Beckman Instruments. Inc. Bowser-Morner Testing Labs., Inc. Brandt Associates, Inc. Clark Microanalytical Lab. Crobaugh Labs. DeBell & Richardson, Inc. Harris Labs., Inc. R. J. Harvey Instrument Corp. Huffman Laboratories, Inc. Lachat Chemicals, Inc. LFE Environmental Analysis Laboratories Matheson Gas Products MC/B Manufacturing Chemists Micromeritics Instrument Corp. Nuclear Medical Systems, Inc, Pittsburgh Activated Carbon Div. Quantum Industries H, Reeve Angel & Co., Inc. Reliable Chemical Co. Rinehart Labs., Inc. Rosner-Hixson Laboratories Sadtler Research Laboratories, Inc. TheSeparations Group Shankman Laboratories Foster D. Snell, Inc. TCS United States Testing Co,. Inc. WARF Institute. Inc. Waters Associates Inc. West Coast Technical Service, Inc.

ArRo Labs., Inc. Atlantic Research Corp. Barnebey-Cheney Beckman Instruments, Inc. Bowser-Morner Testing Labs., Inc. Chemical Data Systems, inc. Clark Microanalytical Lab. Core Laboratories, Inc. Crobaugh Labs. DeBell & Richardson, Inc. Detroit Testing Laboratory Greenwood Laboratories Harris Labs., Inc. R. J. Harvey Instrument Corp. Huffman Laboratories, Inc. LFE Environmental Analysis Laboratories Arthur D. Little, Inc. Matheson Gas Products MC/B Manufacturing Chemists Walter C. McCrone Associates, Inc. McCrone-RCI, Inc. Morgan-Schaffer Corp. National Spectrographic Laboratories, Inc. Orenda, Ltd. PCR, Inc. Pittsburgh Activated Carbon Div. Precision Gas Products, Inc. Princeton Organics, Inc. Process Analyzers, Inc. (Tex.) Reliable Chemical Co. Rinehart Labs., Inc. Rosner-Hixson Laboratories Sadtler Research Laboratories, Inc. Shankman Laboratories Shrader Analytical & Consulting Laboratory, Inc. Foster D. Snell. Inc. Spectran Laboratories, Inc. Supelco. Inc. United States Testing Co., Inc. WARF Institute, Inc. West Coast Technical Service, Inc.

gel permeation/diffusion/ filtration Abcor, Inc. Analytical Development Corp. ArRo Labs., Inc. Atlantic Research Corp. Cellomer Associates, Inc. DeBell & Richardson, Inc. Harris Labs., Inc. Huffman Laboratories, Inc. Imaginative Alchemy Unlimited Liquidyne Corp. Arthur D. Little, Inc. Micromeritics Instrument Corp. Pharmacia Fine Chemicals, Inc. Reliable Chemical Co. Spectrum Medical Industries, Inc. Universal Water Corp. Waters Associates Inc. Worthington Biochemical Corp.

ion exchange Abcor, Inc. Analytical Development Corp. Atlantic Research Corp. Beckman Instruments, Inc. Brandt Associates, Inc. Cellomer Associates, Inc. Clark Microanalytical Lab. Core Laboratories, Inc. Crobaugh Labs. DeBell & Richardson, Inc. Greenwood Laboratories Harris Labs., Inc. Huffman Laboratories, Inc.

imaginative Alchemy Unlimited

Atlantic Research Corp. Beckman Instruments, Inc. Harris Labs., Inc. Helena Laboratories Imaginative Alchemy Unlimited Ionics, Inc. LFE Environmental Analysis Laboratori Millipore Corp. Nuclear Medical Systems, Inc. H. Reeve Angel & Co., inc. Reliable Chemical Co. WARF Institute, Inc.

ionics, Inc. LFE Environmental Analysis Laboratories Arthur D. Little, Inc. MC/B Manufacturing Chemists Nuclear Medical Systems, Inc. Osmonics, Inc. Pharmacia Fine Chemicals, Inc. Radiation Facilities, Inc. H. Reeve Angel & Co., Inc. Reliable Chemical Co. Sadtler Research Laboratories, Inc. The Separations Group SERFILCO Shankman Laboratories Foster D. Snell, Inc. WARF Institute, Inc. Waters Associates Inc. Worthington Biochemical Corp.

gas

liquid-liquid

Abcor, Inc. Alpha Analytical Labs. Analabs, Inc. Analytical Development Corp. Applied Science Labs., Inc.

Abcor, Inc. Analytical Development Corp. Atlantic Research Corp. Cellomer Associates, Inc. Crobaugh Labs.

electrophoresis

AUGUST 1973 281 LG

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SEPARATIONS, CHROMATOGRAPHY SPECTROMETRY, DIFFRACTION; X-RAY DeBell & Richardson, Inc. Harris Labs., Inc. LFE Environmental Analysis Laboratories Arthur D. Little, Inc. MC/B Manufacturing Chemists Nuclear Medical Systems, Inc. Osmonics, Inc. Pittsburgh Activated Carbon Div. H. Reeve Angel & Co., Inc. Reliable Chemical Co. Sadtler Research Laboratories, Inc. The Separations Group Foster D. Snell, Inc. Supelco, Inc. Universal Water Corp. WARF Institute, Inc. Waters Associates Inc.

paper Atlantic Research Corp. Beckman Instruments, Inc. Brandt Associates, Inc. Crobaugh Labs. DeBell & Richardson, Inc. Harris Labs.. Inc. Huffman Laboratories, Inc. Imaginative Alchemy Unlimited LFE Environmental Analysis Laboratories Arthur D. Little, Inc. MC/B Manufacturing Chemists McCrone-RCI, Inc. Nuclear Medical Systems, Inc. H. Reeve Angel & Co., Inc. Reliable Chemical Co. Rosner-Hixson Laboratories Sadtler Research Laboratories, Inc. Shankman Laboratories Foster D. Snell, Inc. Tivian Laboratories, Inc. WARF Institute, Inc.

thin layer CO

δ

ΈΦ

(Ο

π

Analabs, Inc. Analytical Development Corp. Applied Science Labs., Inc. Atlantic Research Corp. Brandt Associates, Inc. Clark Microanalytical Lab. Crobaugh Labs. DeBell & Richardson, Inc. Endocrine Laboratories of Madison, Inc. Greenwood Laboratories Harris Labs., Inc. Huffman Laboratories, Inc. Imaginative Alchemy Unlimited Lachat Chemicals, Inc. LFE Environmental Analysis Laboratories Arthur D. Little, inc. MC/B Manufacturing Chemists McCrone-RCI, Inc. Nuclear Medical Systems, Inc. PCR, Inc. Pharmacia Fine Chemicals, Inc. Quantum Industries H. Reeve Angel & Co., Inc. Reliable Chemical Co. Rosner-Hixson Laboratories Sadtler Research Laboratories, Inc. Shankman Laboratories Foster D. Snell. Inc. Supelco, Inc. Tivian Laboratories, Inc. WARF Institute, Inc.

SEPARATIONS, distillation Anachemia Chemicals, Inc. Analabs, Inc. Applied Science Labs., Inc. Atlantic Research Corp. Bodman Chemicals Bowser-Morner Testing Labs., Inc. Chemical & Solvent Distillers Co., Inc. Chemical Samples Co. Chem-Pro Equipment Corp. Clark Microanalytical Lab. Detroit Testing Laboratory Harris Labs., Inc. Huffman Laboratories, Inc. The Humphrey Chemical Co. Lachat Chemicals, Inc. Arthur D. Little, Inc. MC/B Manufacturing Chemists PCR, Inc. Pollard & Co. Reliable Chemical Co. Rosner-Hixson Laboratories Saber Labs., Inc. Sadtler Research Laboratories, Inc. Scientific Gas Products Inc. Shankman Laboratories Foster D. Snell, Inc. Specialty Organics, Inc. Tivian Laboratories, Inc. WARF Institute, Inc. West Coast Technical Service, Inc. Westinghouse Electric Corp.

282 LG AUGUST 1973

SEPARATIONS, extraction Analabs, Inc. Analytical Development Corp. Applied Science Labs., Inc. Atlantic Research Corp. Bowser-Morner Testing Labs., Inc. Chemical & Solvent Distillers Co., Inc. Clark Microanalytical Lab. Crobaugh Labs. Detroit Testing Laboratory S. G. FrantzCo., Inc. Freeman Industries, Inc. Galbraith Labs., Inc, Harris Labs., Inc. Huffman Laboratories. Inc. Lachat Chemicals. Inc. LFE Environmental Analysis Laboratories MC/B Manufacturing Chemists Miles Labs., Inc., Research Div. Osmonics, inc. Reliable Chemical Co. Rosner-Hixson Laboratories Sadtler Research Laboratories, Inc. Shankman Laboratories Foster D. Snell, Inc. Tivian Laboratories, Inc. WARF Institute, Inc. West Coast Technical Service, Inc. Westinghouse Electric Corp.

SEPARATIONS, ion exchange Analabs, Inc. Analytical Development Corp. Atlantic Research Corp. Clark Microanalytical Lab. Crobaugh Labs. Harris Labs., Inc. Huffman Laboratories. Inc. Ion Exchange Products, Inc. Ionics, Inc. Ledoux & Co. LFE Environmental Analysis Laboratories MC/B Manufacturing Chemists Osmonics, Inc Pharmacia Fine Chemicais, Inc. H. Reeve Angel &Co., Inc. Reliable Chemical Co. Rosner-Hixson Laboratories Sadtler Research Laboratories, Inc SERFILCO Shankman Laboratories Foster D. Snell, Inc. WARF Institute, Inc. Waters Associates Inc. Westinghouse Electric Corp. Worthington Biochemical Corp.

SEPARATIONS, precipitation (homogeneous, etc.) Analytical Development Corp. Atlantic Research Carp. Detroit Testing Laboratory Harris Labs., Inc. Huffman Laboratories. Inc. Ledoux & Co. LFE Environmental Analysis Laboratories MC/B Manufacturing Chemists Miles Labs.. Inc., Pesearch DIV. Reliable Chemical Co. Shankman Laboratories Tivian Laboratories, Inc. WARF Institute. Inc. Westinghouse Electric Corp.

SPECTROMETRY, ABSORPTION

Fisher Scientific Co. Galbraith Labs., Inc. Harris Labs., Inc. Instrumentation Laboratory Inc. International Hydronics Corp. International Testing Labs., Inc. Jarrell-Ash Div. Ledoux & Co. LFE Environmental Analysis Laboratories Arthur D. Little, Inc. MC/B Manufacturing Chemists National Spectrographic Laborator es. Inc. Penniman & Browne, Inc. Reliable Chemical Co. Rosner-Hixson Laboratories Sadtler Research Laboratories, Inc. Shankman Laboratories Shilstone Engineering Testing Laboratory, Inc. SMI A. O. Smith Corp. Foster D. Snell, Inc. Spectro Products, Inc. Stewart Laboratories. Inc. Structure Probe, Inc. United States Testing Co., Inc. Varian Vacuum Div. WARF Institute, Inc. West Coast Technical Service, Inc. Westinghouse Electric Corp.

infrared Alpha Analytical Labs. Andros, Inc. ArRo Labs., Inc. Atlantic Research Corp. Beckman Instruments, Inc. Bowser-Morner Testing Labs., Inc. Brandt Associates, Inc. Cambridge Physical Sciences Clark Microanalytical Lab. Judith H. Clausen, Ph.D., Consulting Chemist Core Laboratories, Inc. Crobaugh Labs. DeBell & Richardson, Inc. Detroit Testing Laboratory Eastman Kodak Co. General Technologies Corp. Greenwood Laboratories Harris Labs., Inc. R. J. Harvey Instrument Corp. Huffman Laboratories, Inc. International Testing Labs., Inc. Kendall Infrared Laboratories Lachat Chemicals, Inc. LFE Environmental Analysis Laboratories Arthur D. Little, Inc. MC/B Manufacturing Chemists McCrone-RCI, Inc. Midwest Research Institute National Spectrographic Laboratories, Inc. Nuclear Medical Systems, Inc. PCR, Inc. Reliable Chemical Co. Rinehart Labs., Inc. Sadtler Research Laboratories, Inc. Shankman Laboratories Sloan Research Industries Div. Spectran Laboratories, Inc. Stewart Laboratories, Inc. Structure Probe, Inc. Tivian Laboratories, Inc. United States Testing Co.. Inc. WARF Institute, Inc. West Coast Technical Service, Inc Willey Corp. Wilks Scientific Corp.

microwave

acoustic

Arthur D. Little, Inc.

Accu-Labs Research, Inc. Baganoff Associates, Inc.

ultraviolet

atomic Alpha Analytical Labs. ArRo Labs., Inc. Atlantic Research Corp. Bowser-Morner Testing Labs., Inc. Brandt Associates, Inc. Chicago Spectro Service Lab., Inc. Judith H. Clausen, Ph.D., Consulting Chemist Coors Porcelain Co. Coors Spectro-Chemical Lab Core Laboratories, Inc. Corning Glass Works (NY.) Corning Glass Works (Mass.) Crobaugh Labs. DeBell & Richardson, Inc. Environmental Science and Engineering Corp. F & J Scientific

Alpha Analytical Labs. Analytical Development Corp. Andros, Inc. Applied Science Labs., Inc. Atlantic Research Corp. Beckman Instruments, Inc. Bowser-Morner Testing Labs., Inc. Brandt Associates, Inc. Clark Microanalytical Lab. Judith H. Clausen, Ph.D., Consulting Chemist Coors Spectro-Chemical Lab. Crobaugh Labs. DeBell & Richardson, Inc. Detroit Testing Laboratory Environmental Science and Engineering Corp. GCA Technology Div. Greenwood Laboratories Harris Labs., Inc. Huffman Laboratories, Inc. International Testing Labs., Inc.

Kendall Infrared Laboratories Lachat Chemicals, Inc. LFE Environmental Analysis Laboratories Arthur D. Little, Inc. MC/B Manufacturing Chemists McCrone-RCI, Inc. National Spectrographic Laboratories, Inc. Nuclear Medical Systems, Inc. PCR, Inc. Process & Instruments Corp. Reliable Chemical Co. Rinehart Labs., Inc. Rosner-Hixson Laboratories Rudolph Instruments Sadtler Research Laboratories. Inc. Shankman Laboratories Foster D. Snell, Inc. Spectro Products, Inc. Stewart Laboratories, Inc. United States Testing Co., Inc. WARF Institute, inc. West Coast Technical Service, Inc. Westinghouse Electric Corp.

visible Alpha Analytical Labs. Analytical Development Corp. Andros, Inc. Applied Science Labs., Inc. Atlantic Research Corp. Beckman Instruments, Inc. Bowser-Morner Testing Labs., Inc. Brandt Associates, Inc. Judith H. Clausen. Ph.D., Consulting Chemist Coors Spectro-Chemical Lab. Crobaugh Labs. DeBell & Richardson, Inc. Detroit Testing Laboratory Environmental Science and Engineering Corp. Galbraith Labs.. Inc. Greenwood Laboratories Harris Labs.. Inc. Huffman Laboratories, Inc. International Testing Labs., Inc. Kendall Infrared Laboratories Ledoux & Co. LFE Environmental Analysis Laboratories Arthur D. Little, Inc. MC/B Manufacturing Chemists McCrone-RCI, Inc, National Spectrographic Laboratories, Inc. PCR, Inc. Penniman & Browne, Inc. Process & Instruments Corp. Reliable Chemical Co. Rinehart Labs., Inc. Rosner-Hixson Laboratories Rudolph Instruments Sadtler Research Laboratories, Inc. Shankman Laboratories Foster D. Snell, Inc. Spectro Products, Inc. Stewart Laboratories, Inc. TCS United States Testing Co., Inc. WARF Institute, Inc. West Coast Technical Service, Inc. Westinghouse Electric Corp.

x-ray Advanced Metals Research Corp. Alpha Analytical Labs. Atlantic Research Corp. Bowser-Morner Testing Labs., Inc. Columbia Scientific Industries Crobaugh Labs. International Testing Labs., Inc. LFE Environmental Analysis Laboratories Arthur D. Little, Inc. Nuclear Equipment Corp. Nuclear Semiconductor Reliable Chemical Co. Sloan Research Industries Div. Somar Labs., Inc. Stewart Laboratories, Inc.

SPECTROMETRY, DIFFRACTION; X-RAY Advanced Metals Research Corp. Alpha Analytical Labs. Beckman Instruments, Inc. Bowser-Morner Testing Labs., Inc. Cerac, Inc. Coors Porcelain Co. Coors Spectro-Chemical Lab. Crobaugh Labs. DianoCorp., Industrial X-Ray Div. Enraf-Nonius, Inc. Ernest F. Fullam, Inc. International Testing Labs., Inc. Lachat Chemicals, Inc. LFE Environmental Analysis Laboratories Arthur D. Little, Inc.

LABORATORY GUIDE

SPECTROMETRY, DIFFRACTION; X-RAY ZONE REFINING Walter C. McCrone Associates, Inc. McCrone-RCI, Inc. National Spectrographs Laboratories, Inc. Nuclear Equipment Corp. Reliable Chemical Co. Sloan Research Industries Div. Structure Probe, Inc. Westinghouse Electric Corp.

SPECTROMETRY, EMISSION flame Alpha Analytical Labs. Atlantic Research Corp. Beckman Instruments, Inc. Bowser-Morner Testing Labs., Inc. Judith H. Clausen, Ph.D., Consulting Chemist Coors Porcelain Co. Coors Spectro-Chemical Lab. Corning Glass Works (Mass.) Crobaugh Labs. Detroit Testing Laboratory Endocrine Laboratories of Madison, Inc. Environmental Science and Engineering Corp. F & J Scientific Fisher Scientific Co. Huffman Laboratories, Inc. Instrumentation Laboratory Inc. International Hydronics Corp. International Testing Labs., Inc. Jarrell-Ash Div. Ledoux & Co. LFE Environmental Analysis Laboratories National Spectrographic Laboratories, Inc. Orenda, Ltd. Process & Instruments Corp. Reliable Chemical Co. Rinehart Labs., Inc. Sadtler Research Laboratories, Inc. Shankman Laboratories SMI Foster D. Snell, Inc. Spectran Laboratories, Inc. Spectro Products, Inc. Stewart Laboratories, Inc. United States Testing Co., Inc. West Coast Technical Service, Inc. Westinghouse Electric Corp.

Midwest Research Institute

Arthur D. Little, Inc. MC/B Manufacturing Chemists National Spectrographic Laboratories, Inc. PCR, Inc. Reliable Chemical Co. Structure Probe, Inc. West Coast Technical Service, Inc.

fluorescence

differential thermal analysis

International Testing Labs., Inc. Arthur D. Little, Inc. Nuclear Medical Systems, Inc. Reliable Chemical Co.

ArRo Labs., Inc. Atlantic Research Corp. Columbia Scientific Industries DeBell & Richardson, Inc. Delsen Corp. Dynatech R/DCo. Arthur D. Little, Inc. National Instrument Laboratories, Inc. National Spectrographic Laboratories, Inc. The Edward Orton Jr. Ceramic Foundation PCR, Inc. Reliable Chemical Co. Rutherford Research Products Co. Sadtler Research Laboratories, Inc. Stanton Redcroft Structure Probe, Inc. Tem-Pres Research Div. West Coast Technical Service, Inc. Westinghouse Electric Corp.

SPECTROMETRY, MAGNETIC RESONANCE electron spin

mass Avco Corp. Cameca Instruments. Inc. Clark Microanalytical Lab. Gollob Analytical Service International Testing Labs., Inc. Arthur D. Little, Inc. Midwest Research Institute Morgan-Schaffer Corp. Process Analyzers, Inc. (Tex.) Process & Instruments Corp. Shrader Analytical & Consulting Laboratory, Inc. West Coast Technical Service, Inc.

x-ray Advanced Metals Research Corp. Alpha Analytical Labs. Bowser-Morner Testing Labs., Inc. Chicago Spectro Service Lab., Inc. Columbia Scientific Industries Coors Porcelain Co Coors Spectro-Chemical Lab. Crobaugh Labs. DianoCorp., Industrial X-Ray Div. Endocrine Laboratories of Madison, Inc. Ernest F. Fullam, Inc. INAX Instruments Ltd. International Testing Labs., Inc. Ledoux & Co. LFE Environmental Analysis Laboratories Arthur D. Little, Inc. Walter C. McCrone Associates, Inc. McCrone-RCI, Inc. National Spectrographic Laboratories, Inc. PhotoMetrics, Inc. Pitchford Industries Inc. Sloan Research Industries Div. Somar Labs., Inc. Stewart Laboratories, Inc. Structure Probe, Inc. Westinghouse Electric Corp.

LABORATORY GUIDE

Atlantic Research Corp. Beckman Instruments, Inc. Bowser-Morner Testing Labs., Inc. Brandt Associates, Inc. Judith H. Clausen, Ph.D., Consulting Chemist Coors Spectro-Chemical Lab. Corning Glass Works (Mass.) Crobaugh Labs. DeBell & Richardson, Inc. Detroit Testing Laboratory DOHRMANN Div. Envirotech Corp. Fiske Associates, Inc. Galbraith Labs., Inc. Greenwood Laboratories Harris Labs., Inc. Heliotek Huffman Laboratories, Inc. International Testing Labs., Inc. The London Co. MC/B Manufacturing Chemists Penniman S Browne, Inc. Rankin Reagent Co. Reliable Chemical Co. Sadtler Research Laboratories, Inc. Shankman Laboratories Foster D. Snell, Inc. Stewart Laboratories, Inc. Tivian Laboratories, Inc. United States Testing Co., Inc. Westinghouse Electric Corp.

Mossbauer

thermogravimetric analysis

photometric

Austin Science Associates, Inc. ICN Chemical & Radioisotope Div.

ArRo Labs., Inc. Columbia Scientific Industries DeBell & Richardson, Inc. Delsen Corp. Dynatech R/DCo. Arthur D. Little, Inc. National Spectrographic Laboratories, Inc. The Edward Orton Jr. Ceramic Foundation Reliable Chemical Co. Sadtler Research Laboratories, Inc. Stanton Redcroft Structure Probe, Inc. Tem-Pres Research Div. West Coast Technical Service, Inc. Westinghouse Electric Corp.

Alpha Analytical Labs. Atlantic Research Corp Brandt Associates, Inc. Coors Spectro-Chemical Lab. Corning Glass Works (Mass.) Detroit Testing Laboratory Galbraith Labs., Inc. Harris Labs., Inc. Huffman Laboratories, Inc. International Testing Labs., Inc. The London Co. MC/B Manufacturing Chemists Process & Instruments Corp. Reliable Chemical Co. Stewart Laboratories, Inc. Tivian Laboratories, Inc. United States Testing Co., Inc.

nuclear Midwest Research Institute Morgan-Schaffer Corp. Reliable Chemical Co. Sadtler Research Laboratories, Inc. Shrader Analytical & Consulting Laboratory, Inc. Simon Research Laboratory Stohler Isotope Chemicals, Inc.

nuclear quadrupole Wilks Scientific Corp.

TITRATIONS

TEMPERATURE-VACUUM OUT-GASSING

color indicators

Raman Fisher Scientific Co. Jarrell-Ash Div. Spex Industries, Inc.

electrochemical

Gollob Analytical Service Arthur D. Little, Inc. Middlesex General Ind. Monsanto Co. Morgan-Schaffer Corp. Quantachrome Corp. West Coast Technical Service, Inc. Westinghouse Electric Corp.

THERMAL ANALYSIS differential scanning calorimetry Atlantic Research Corp. Dynatech R/DCo.

THERMAL ANALYSIS Fast — Accurate Service WEST COAST TECHNICAL SERVICE Inc. 17605 Fabrica Way, Suite D C err it os. California 90701 Telephone (213)287-0926) After 7-73 (213) 921-9831 ι

Atlantic Research Corp. Beckman Instruments, Inc. Bowser-Morner Testing Labs., Inc. Brandt Associates, Inc. Clark Microanalytical Lab. Judith H. Clausen, Ph.D., Consulting Chemist Coors Spectro-Chemical Lab. Crobaugh Labs. DeBell & Richardson, Inc. Detroit Testing Laboratory Galbraith Labs., Inc. Greenwood Laboratories Harris Labs., Inc. Heliotek Huffman Laboratories, Inc. International Testing Labs., Inc. The London Co. MC/B Manufacturing Chemists Nuclear Medical Systems, Inc. Penniman & Browne, Inc. Rankin Reagent Co. Reliable Chemical Co. Rinehart Labs., Inc. Sadtler Research Laboratories, Inc. Scientific Gas Products Inc. Shankman Laboratories Foster D. Snell, Inc. Stewart Laboratories, Inc. Tivian Laboratories, Inc. United States Testing Co., Inc. WARF Institute, Inc. Westinghouse Electric Corp.

thermometric Harris Labs., Inc. Reliable Chemical Co. United States Testing Co., Inc.

TRITIUM LABELING Eberline Instrument Corp. ICN Chemical & Radioisotope Div. Isolab, Inc. Mallinckrodt Chemical Works, Science Products Div. Mallinckrodt/Nuclear New England Nuclear Nuclear Equipment Chemical Corp. Nuclear Medical Systems, Inc. Schwarz/Mann Scientific Gas Products Inc. WARF Institute, Inc.

ZONE REFINING Aremco Products, Inc. J. T. Baker Chemical Co. Chemical Samples Co. Enraf-Nonius, Inc. Heliotek Materials Research Corp. Princeton Organics, Inc. Reliable Chemical Co. Semi-Elements, Inc. Technics, Inc. United Mineral & Chemical Corp. VAR-LAC-OID Chemical Co. Westinghouse Electric Corp.

AUGUST 1973 283 LG

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