Analytical and Research Services - Analytical Chemistry (ACS

Aug 1, 1980 - Analytical and Research Services. Anal. Chem. , 1980, 52 (10), pp 251–257 ... ACS Legacy Archive. Note: In lieu of an abstract, this i...
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Research and Analytical Services Each type of service is followed by an alphabetical list of suppliers. Addresses and telephone numbers of these suppliers are given in the Company Directory, Section 9, of the LabGuide.

IRT Corp M P K OmegaCo Nuclear Equipment Chemical Corp Nuclear Sources R Services. Inc Truesdail Labs, Inc

Shrader Analytical, Inc Foster D. Snell lnc Spectrix Corp Spectrogram Corp Springborn Labs Inc Structure Probe, Inc Suntech Inc Sverdrup/ARO. Inc TenEch Enwonmental Consultants, Inc Truesdail Labs., lnc. United States Testing Co , lnc Versar. Inc. West Coast Technical Service. Inc. Weston Designers Consultants

AIR ANALYSIS

AMINO ACID ANALYSIS

Actus Environmental Services, Inc. Acurex Corp. American Chemical R Research Laboratories American Standards Testing Bureau, Inc. Analytical Research Labs., Inc. Applied Reserch Labs of Fla Inc. Arro Laboratories. Inc. A: a n t c Researcn Corp Bacnaracn instrLment Co Eetz-Conkerse-M-rcocn nc Cambridge Analytical Associates CDMi Accu-Labs Chemir Laboratories Coors Spectro-Chemical Lab Core Laboratories. Inc. Crippen Laboratories CVC Products, Inc. Detroit Testing Laboratory. Inc. Energetics Sdence Environmental Research Group Environmental Science R Engineering Corp. Environmental Sciences Associates, Inc. Finniaan Institute Foxbzro Analytical Ernest F. Fullam, Inc. GCA Technology Div. Gollob Analytical Service Greenwood Laboratories Huffman Labs.. Inc. Hydroscience Inc. Independent Equipment Corp. Industrial Testing Laboratories. Inc. Kendall Infrared Laboratories Lancaster Laboratories, Inc Laucks Testing Labs., Inc. LFE Corp.. Environmental Analysis Laboratories Liquid Carbonic Corp. Metronics Monitor Labs, Inc Monsanto Co. Morgan-Schaffer Corp. M. P K . Omega Co. NUS Corp. Orlando Labs.. Inc Princeton Testing Laboratory. Inc. Radian Corp Recon Systems. Inc RFR Corn Rhoads Scientific Co. Sadtler Research Laboratories Safety Specialists, Inc. Scott Environmental Technology, Inc Charles M Shapiro 8 Sons, P c.

American Standards Testing Bureau, Inc Analytical Bio Chemistry Labs., Inc Arro Laboratories. Inc Cambridge Analytical Associates Crippen Laboratories Mark Instrument Co. M P. K. Omega Co. Nuclide Corp. Nuclide Corp.. AGV Div NUS Corp Rhoads Scientific Co Sequemat, Inc. Foster D Snell. Inc. Truesdail Labs, Inc Weston Designers Consultants

ACTIVATION ANALYSIS American Standards Testing Bureau. Inc. Columbia Scientific Industries Corp. Environmental Research Group General Activation Analysis, Inc

ANALYTICAL A R L Great Lakes Agricultural Labs.. Inc Actus Environmental Services, Inc Acurex Corp. American Chemical R Research Laboratories American Standards Testing Bureau, Inc Anachemia Chemicals. Inc. Analytical Associates. Inc. Analytical Bio Chemistry Labs.. Inc Analytical Development Corp. Analytical Research Labs , Inc. Anver Bioscience Design, Inc Applied Reserch Labs. o f Fla Inc. Arro Laboratories. Inc. Atlantic Research Corp. Betz-Converse-Murdoch, Inc. Eiomeasure, Inc Branchemco, Inc. Brandywine Research Laboratory, Inc California Analytical Labs Cambridge Analytical Associates CDMi Accu-Labs Chemir Laboratories Coors Spectro-Chemical Lab. Core Laboratories. Inc. Coulter Electronics, Inc Crippen Laboratories E I du Pont de Nemours R Co , inc Environmental Research Group Environmental Science & Engineering Corp Environmental Sciences Associates, Inc. Charles Evans R Associates Finnigan Institute Foremost Research Foxboro Analytical

GCA Technology Div. Goilob Analyticai Service Greenwood Laboratories Daniel C. Griffith & Co , Ltd. Hastings Analytical Laboratory Huffman Labs., Inc Hydroscience Inc. Illinois Water Treatment Co. Independent Equipment Corp. Industrial Bio-Test Labs., Inc. Industrial Testing Laboratories. Inc. lnterex Corp. Kendall Infrared Laboratories Laboratory For Materials. Inc Lancaster Laboratories, lnc. Laucks Testing Labs, Inc LFE Corp., Environmental Analysis Laboratories Micro-Analysis. Inc. Molecular Structure Corp. Monsanto Co Morgan-Schaffer Corp. M. P K Omega Co. Nardone Labs. Noah Chemical NUS Corp. Orlando Labs.. Inc. Packard Instrument Co., Inc PCR Research Chemicals, Inc. Perkin-Elmer Corp., Physical Electronics Div. Polyhedron Laboratories Poivmer Evaluation Labs.. Inc. PolyScience Corp Princeton Testing Laboratory inc. QuadRex Corp. Quantachrome Corp. Radian Corp. Recon Systems, Inc RFR Corp Rhoads Scientific Co Sadtler Research Laboratories Safety Specialists, Inc Schneider instrument Co Scott Environmental Technology, Inc. Shrader Analytical, Inc. Foster D Snell. Inc. Spectrix Corp. Springborn Labs. Inc Structure Probe, inc. Suntech. ~ n c . SverdrupiARO, Inc. Tecator. Inc. TEI Analytical Teledyne Isotopes TenEch Environmental Consultants, Inc. Thornton Laboratories, Inc Tivian Laboratories. Inc. Truesdail Labs.. Inc. United States Testing Co , Inc Versar. Inc West Coast Technical Service, Inc Weston Designers Consuitants

ANALYTICAL TOXICOLOGY American Standards Testing Bureau, Inc. Analytical Bio Chemistry Labs.. Inc. Applied Reserch Labs. of Fla. Inc. Atlantic Research Corp. Eetz-Coiiverse-Murdoch. Inc Eiomeasure, Inc Environmental Sciences Associates. Inc Foxboro Anaiytical Independent Equipment Corp

LFE C o r p , Environmental Analysis Laboratories Monsanto Co. M P. K. Omega Co. Nuclide Corp. Orlando Labs., Inc QuadRex Corp. Recon Systems. Inc. Safety Specialists. Inc. Spectrix Corp. Springborn Labs Inc. United States Testing Co.. Inc

BACTERIMETRIC ANALYSIS American Standards Testing Bureau, Inc Atlantic Research Corp Betz-Converse-Murdoch, inc. Branchemco. lnc. M. P. K Omega Co. Orlando L a b s , Inc Foster D . Snell, Inc TenEch Environmental Consultants, Inc. Truesdail Labs.. Inc. United States Testing Co.. Inc. Weston Designers Consultants

CALIBRATION SERVICES American Standards Testing Bureau. Inc. Applied Reserch Labs. of Fla. Inc. Buck Scientific. Inc. Eberline Instrument Corp. Gollob Analytical Service Independent Equipment Corp. Lancaster Laboratories. Inc. LFE Corp.. Environmental Analysis Laboratories Liquid Carbonic Corp. Metronics Morgan-Schaffer Corp. Nuclear Sources R Services, Inc. Quantachrome Corp. Recon Systems, Inc. Ruska Instrument Corp. Safety Specialists, Inc. Scientific Gas Products Inc. Scott Environmental Technology, Inc. Teledyne Isotopes Union Carbide CorD.. Linde Specialty Gas United Stales Testing Co., Inc.

CHROMATOGRAPHY adsorption (column) American Chemical R Research Laboratories American Standards Testing Bureau, Inc Analytical Bio Chemistry Labs., Inc Analytical Development Corp. Analytical Products, Inc. Analytical Research Labs., Inc. Anver Bioscience Design. Inc. Eetz-Converse-Murdoch, Inc. California Analytical Labs Cambridge Analytical Associates Chemir Laboratories Core Laboratories. Inc. Crippen Laboratories Foremost Research W. R. Grace R Co. W A Hanimond Drierite Co. Hastings Analytical Laboratory

Huffman Labs., Inc. Hydroscience Inc illinois Water Treatment Co. Independent Equipment Corp. Industrial Bio-Tes! Labs.. Inc. Johns-Manville Lancaster Laboratories, Inc Laucks Testing Labs., Inc. LFE Coro.. Environmental Analysis Laboratories MCB Manufacturing Chemists. Inc. Monsanto Co. Pharmacia Fine Chemicals Pierce Chemical Co Polyhedron Laboratories Radian Corp. Recon Systems. Inc RFR Corp. Rhoads Scientific Co. Scott Environmental Technology, Inc. Seneca Research, Inc. The Separations Group (Vydac) Foster D Snell. Inc. Springborn Labs. Inc. SverdruplARO. Inc. TEI Analytical Truesdail Labs., Inc. West Coast Technical Service, lnc. Whatman. Inc , Chemical Separation Div.

electrophoresis American Standards Testing Bureau, Inc. Analytical Development Corp. Foremost Research Huffman Labs., Inc. MCB Manufacturing Chemists, Inc. Pharmacia Fine Chemicals Polysciences. Inc. Truesdail Labs., Inc. Whatman, inc., Chemical Separation Div. Whatman Paper Div.

gas

A R L Great Lakes Aoricultural Labs.. Inc Abcor. Inc. Actus Environmental Services. Inc. Acurex Corp Airco. Inc Air Products R Chemicals, Inc American Standards Testing Bureau, Inc. Analytical Bio Chemistry Labs., Inc. Analytical Development Corp. Analytical Research Labs., Inc. Applied Reserch Labs. of Fla. Inc. Arro Laboratories, Inc. Atlantic Research Corp. Betz-Converse-Murdoch. Inc. Biomeasure, Inc. Brandywine Research Laboratory, Inc. California Analytical Labs Cambridge Analytical Associates CDMiAccu-Labs Coors Spectro-Chemical Lab. Core Laboratories, Inc. Crippen Laboratories Detroit Testing Laboratory, Inc. Environmental Research Group Environmental Science R Engineering Corp.

AUGUST 1980 251

CHROMATOGRAPHY EDUCATION COURSES Finnigan Institute Foremost Research Foxboro Analytical GCA Technology Div Gollob Analytical Service Greenwood Laboratories Hastings Analytical Laboratory Honeywell, Inc.. Process Control Div Huffman Labs.. Inc Hydroscience Inc Illinois Water Treatment Co Industrial Bio-Test Labs, Inc industrial Testing Laboratories, Inc. lnterex Gorp Johns-Manville Lancaster Laboratories, Inc. Laucks Testing Labs., Inc. L. C. Co., inc. L F t Corp . Environmental Analysis Laboratories Monsanto Co. Morgan-Schaffer Corp NUS Corp Orlando Labs. Inc Packard Instrument Co , Inc Particle Data, Inc Pierce Chemical Co Polymer Evaluation Labs., Inc Princeton Testing Laboratory, Inc OuadRex Coro Radian Corp. Recon Systems, Inc Rhoads Scientific Co. Scientific Gas Products Inc. Scott Environmental Technology, Inc. Charles M Shapiro 8 Sons, P c. Shrader Analvtical. Inc Foster D. Snell. lnc Spectrix Corp Springborn Labs Inc Suntech, Inc. SverdrupIARO. Inc TEI Analytical Teledyne isotopes TenEch Environmental Consultants, Inc Thornton Laboratories. Inc Truesdail Labs.. Inc. Union Carbide Corp., Linde Speciaity Gas United States Testing Co , Inc. Versar. Inc West Coast Technical Service, Inc Weston Designers Consultants

gel permeation/diffusion/ filtration American Standards Testing Bureau, Inc Analytical Bio Chemistry Labs. Inc Analytical Development Corp Arro Laboratories, Inc. Atlantic Research Corp. California Analytical Labs Cambridge Analytical Associates Crippen Laboratories Hastings Analytical Laboratory Huffman Labs.. Inc. LFE Corp , Environmentai Analysis Laboratories MCB Manufacturing Chemists. Inc. Pharmacia Fine Chemicals Pierce Chemical Co Radian Corp. Rhoads Scientific Co. Seneca Research, Inc. Spectrum Medical industries, lnc. Springborn Labs inc Sverdrup/ARO, Inc TEI Analytical Tiuesdail Labs, inc United States Testing Co.. Inc. West Coast Technical Service, Inc Weston Designers Consultants Whatman, Inc., Chemical Separarion Div. Whatman Paper Div

ion exchange American Standards Testing Bureau. Inc Analytical Bio Chemistry Labs Inc. Analytical Development Corp.

252 AUGUST 1980

Betr-Converse-Murdoch, Inc. California Analytical Labs Cambridge Analytical Associates Chromatronix. Inc Crippen LabGiatOrieS Foremost Research GCA Technology Div Greenwood Laboratories Huffman Labs.. Inc. Hydroscience lnc Illinois Water Treatment Co Industrial Testing Laboratories. Inc Lancaster Laboratories. Inc LFE Corp , Erivironniental Analysis Laboratories Mark Instrument Co. Monsanto Co NUS Corp Pharmacia Fine Chemicals Pierce Chemical Go. Polysciences. Inc Radian Corp Rhoads Scientific Co Seneca Research. Inc. The Separations Group (Vydac) Foster D Snell. Inc Sverdrup/ARO, Inc TEI Analytical Truesdail Labs, Inc United States Testing Co., inc Wescan Instruments. Inc. Weston Designers Consultants Whatman. Inc., Chemical Separation Div. Whatman Paper Div

liquid A & L Great Lakes Agricultural Labs, Inc American Standards Testing Bureau. inc Analytical Bio Chemistry Labs., Inc. Analytical Development Corp Analytical Research Labs., Inc. Anver Bioscience Design, Inc Applied Reserch Labs. of Fla. Inc Atlantic Research Gorp Biomeasure. Inc. Brandywine Research Laboratory, Iiic. California Analytical Labs Cambridge Analytical Associates Core Laboratories. Inc. Crippen Laboratories Environmental Research Group Environmental Sciences Associates, Inc. Finnigan institute Foremost Research Gollob Analytical Service Hastings Analytical Laboratory Huffman Labs., lnc. Hydroscience Inc Illinois Water Treatment Co. Industrial Bio-Test Labs, Inc Johns-Manvilie Lancaster Laboratories, Inc. L C. Go.. lnc. LFE Corp.. Environmental Analysis Laboratories LiquiFlo Equipment Co. MCB Manufacturing Chemists, Inc Micromeritics Instrument Corp Monsanto Co NUS Corp Pharmacia Fine Chemicals Pierce Chemical Co Polymer Evaluation Ldbs.. Inc Princeton Testing Laboratory. Inc Radian Corp Rhoads Scientific Co. The Separatioiis Group (Vydac) Spectrix Corp. Springborn Labs lnc Sverdrup/ARO. Inc. TEI Analytical Truesdail Labs, Inc. United States Testing Co , Inc. Versar Inc West Coast Technical Service. lric Whatman Inc , Chemical Separation Div

paper American Bureau Analytical Analytical

standards Testing II~L Development Corp Research Ldbs Inc

Aiiver Bioscience Design, Inc. Applied Reserch Labs of Fla. Inc Atlantic Research Corp California Analytical Labs Cambridge Analytical Associates Crippen Laboratories Foremost Research Huffman Labs., Inc. Industrial Testing Laboratories, lnc Lancaster Laboratories. Inc. LFE Corp , Environmental Analysis Laboratories Monsanto Go Packard Instrument Co.. Inc Polyhedron Laboratories Rhoads Scientific Co. Foster D Snell. Inc. Spectrix Corp. Sverdrup/ARO. Inc. Toyo Roshi International, Inc Truesdail Labs, Inc. United States Testing Co., lnc Whatman Paper Div

thin-layer

Analytical Development Gorp. Analytical Research Labs.. Inc. Anver Bioscience Design, Inc. Applied Reserch Labs. of Fla. inc Atlantic Research Corp. California Analytical Labs Cambridge Analytical Associates Chronldtronix, lnc Crippen Laboratories Environmental Research Group Foremost Research Fotodyne. Inc W. R Grace & Co Greenwood Laboratories Hastlngs Analytical Laboratory Huffman Labs.. Inc Industrial Bio-Test Labs., Inc Lancaster Laboratories. Inc. Laucks Testing Labs. Inc. LFE Corp , Environmental Analysis Laboratories MCB Manufacturing Chemists. IIlC

Monsanto Go Packard Instrument Co.. Inc. Pharmacia Fine Chemicals Polvhedron Laboratories Radian Corp Rhoads Scientific Co Foster D Snell Inc Spectrix Corp Spriiigborn Labs inc Sverdruo'ARO. Inc TEI Anaiytical Tivian Laboratories, inc. Truesdail Labs, Inc. United States Testing Co., Inc. West Coast Technical Service, Ill'

Whatnian. Inc . Chemical Separation Div.

CONSULTING A 8 L Great Lakes Agricultural LdbS , InC A b i o r . Inc Actus tilvirorimental Services, 1nc Acurtx Corp. AmeriLaii Chemical & Research LdbOratOrleS Ainerican Radiochemical Corp Ariierican Standards Testing Bureau, inc AndiytlLal Associates. Inc. Analytical Development Gorp AndlyliLal Research Labs., Inc Anver Bioscience Design, Inc. Applied Reserch Labs. of Fla. lill2 Arlo Laboratories, Inc Bellson Co bioarialytical Systems. Inc. Bioineasure lnc. Biomedical Enterprises, Inc Bfanchenico. inc. Btdildywirie Resedrch LdDuratory lric Ldliforiiia Analytical Labs Galribridge Analytical Associates

G Thomas Cartier CDMIAccu-Labs Chemir Laboratories Core Laboratories. Inc Crippen Laboratories D.R. Technology, Inc. Dynatech RID Co Environmental Research Group Environmental Science & Engineering Corp. Environmental Sciences Associates. Inc. Finnigan Institute Foremost Research Fotodyne. Inc. Galiieo Electro-Optics Corp. GCA Technology Div. General Drug & Chemical Corp. Gollob Anaiytical Service Greenwood Laboratories Hdstings Analytical Laboratory Huffman Labs, Inc. Hydroscience Inc Hydro Service 8 Supplies Ideal Gas Products, Inc. Independent Equipment Corp. Industrial Bio-Test Labs.. Inc. industrial Testing Laboratories,

Inc Kendall Infrared Laboratories Laboratory For Materials, Inc. Lancaster Laboratories. Inc. L. C Co.. Inc LFE Corp , Environmental Analysis Laboratories Mark Instrument Co. Walter C. McCrone Associates, lnc MEl-Charltori. Inc Metronics Molecular Structure Corp. M P K Omega Co Nardone Labs henpo't Research Corp huan Cneiiica NL: rilr So-rcej 8 Serb ces. Inc NUS Corp. PhotoMetrics, Inc Polyhedron Laboratories Polymer Evaluation Labs.. Inc. Polysciences. Inc Princeton Testing Laboratory, lnc Process 8 Instruments Corp QuadRex Corp. Radian Gorp. Recon Systems, Inc RFR Cotp Rhoads Scientific Co. Roiar Corp. Safety Specialists. Inc. Schneider Instrument Co Scientific Systems Corp. Scott Environmental Technology, Inc Seneca Research, Inc. Charles M. Shapiro 8 Sons PC Shrader Analytical, Inc. Foster D. Snell, Inc. Specialty Organics, Inc Spectrix Corp Spectrogram Corp. Springborn Labs. Inc. Structure Probe. Inc. Suntech, Inc Sverdrup/ARO. Inc TCS Teiedyne Isotopes TenEch Environmental Consultants, Inc. Tivian Laboratories, Inc. Truesdail Labs., lnc. United States Testing Co., Inc. Universal Scientific, Inc. Versar, Inc. West Coast Technical Service, Inc Weston Designers Consultants

CONTRACT INSTRUMENTATION Adams-Smith. Inc. American Standards Testing Bureau, Inc. Applied Reserch Labs. of Fla. Inc. Bioanalytical Systems, Inc. Biomedical Enterprises, Inc. Buck Scientific. Inc. Control Equipment Corp. Core Laboratories. Inc Dvnatech R/D Co. Dinatron. lnc

Energetics Science Environmental Sciences Associates, Inc. Independent Equipment Gorp L. C. Co., Inc Mark Instrument Co. Molecular Structure Corp. Nardone Labs. Nuclide Corp. Nuclide Corp.. AGV Div Polyhedron Laboratories Process 8 Instruments Coro. QuadRex Corp. RFR Corp. Rudolph Instruments Schneider Instrument Co Science Centre, Iric. Scientific Systems Corp Scott Environmental Technology, Inc. Sequemat. Inc Spectrogram Corp Sverdrup/ARO. Inc TCS Teledyne Isotopes Theta Industries Inc Truesdail Labs, Inc Weston Designers Consultants

CRYSTAL GROWING Atomeraic Chemetals CorD LeyboldlHeraeus Vacuum ' Products, Inc. Materials Research Corp. Molecular Structure CorD. Noah Chemical Teledyne Isotopes Union Carbide Corp , Electronics Div

DATA ACOUlSlTlON Acurex Corp B 8 F Instruments Betz-Converse-M.r30cn. .nc Cnem r Laooratories Ccntro EQUprnent Corp Core Laboratories. Inc. E. I. du Pont de Nemours & Co., Inc. Dynatech R/D Co. EDMAC Associates. Inc. Environmental Research Group Finnigan Institute FX Systems Corp. Kinetic Systems Corp. Molecular Structuie Gorp. Monitor Labs, Inc. M. P. K . Omega Co. Schneider Instrument Co Foster D. Snell, Inc. Spectrogram Corp. Sperry Univac Mini-Computer Operations SverdruplARO. Inc. TenEch Environmental Consultants, Inc. Versar, Inc. Weston Designers Consultants

DENSITY MEASUREMENT American Standards Testing Bureau, Inc. Atlantic Research Corp Betz-Converse-Murdoch. Inc Coors Spectro-Chemical Lab. Crippen Laboratories Dynatech R I D Co. Environmental Research Group Independent Equipment Corp. LFE Gorp., Environmental Analysis Laboratories Quantachrome Corp. Recon Systems, Iiic. Rudolph Instruments Foster D. Snell, Inc. Spectrogram Corp. Springborn Labs. Inc Suntech. Inc. Truesdail Labs, Inc. United States Testing CO , Inc.

EDUCATION COURSES A 8 L Great Lakes Agricultural Labs., Inc. Actus Environmental Services, Inc. American Standards Testing Bureau, Inc. Bioanalytical Systems, Inc. Chemir Laboratories Core Laboratories. Inc. Coulter Electronics, Inc. Dionex Corp. E. 1 du Pont de Nemours 8 Co.. Inc.

INDUSTRIAL HYGIENE Finnigan Institute MCB Manufacturinq Chemists,

ELECTROCHEMISTRY American Standards Testing Bureau. Inc. Applied Reserch Labs. of Fla. Inc. Atlantic Research Corp. Bioanalytical Systems, Inc. ECO Energetics Science Environmental Sciences Associates, Inc. Industrial Testina Laboratories, Inc. LFE Corp.. Environmental Analysis Laboratories Orlando Labs.. Inc. Radian Corp Schneider Instrument Co Foster D Snell, Inc Tivian Laboratories, Inc Truesdail Labs, Inc United States Testing Co , Inc Weston Designers Consultants

ELECTRON MICROPROBE American Standards Testing Bureau. Inc Cambridge Analytical Associates Coors Soectro-Chemical Lab Ernest F'. Fullam, Inc Industrial Testing Laboratories, Inc. LFE Corp., Environmental Analysis Laboratories Walter C. McCrone Associates. Inc. MEl-Charlton. Inc. Nuclide Corp Nuclide Corp., AGV Div. PhotoMetrics, Inc. Polymer Evaluation Labs., Inc. Recon Systems, Inc. Structure Probe, Inc. Truesdail Labs., Inc.

ELEMENTAL ANALYSIS inorganic A & L Great Lakes Agricultural Labs., Inc. Abcor, Inc. Acurex Corp. Air Products & Chemicals, Inc. American Chemical & Research Laboratories American Standards Testina Bureau, Inc. Analytical Associates, Inc. Analytical Bio Chemistry Labs., Inc. Analytical Research Labs, Inc. Arro Laboratories, Inc. Atlantic Research Corp. Atomergic Chemetals Corp. Branchemco, Inc. Cambridge Analytical Associates CDM/ Accu-Labs Coors Spectro-Chemical Lab Core Laboratories, Inc. Crippen Laboratories Detroit Testing Laboratory, Inc. Environmental Research Group Environmental Science & Engineering Corp. Environmental Sciences Associates, Inc. Charles Evans & Associates Foremost Research Galbraith Labs., Inc. GCA Technology Div. General Activation Analysis, Inc. Gollob Analytical Service Daniel C. Griffith & Co., Ltd. Hastings Analytical Laboratory Hydroscience Inc. Illinois Water Treatment Co. Independent Equipment Corp. Industrial Bio-Test Labs., Inc. Industrial Testing Laboratories, Inc. lnterex Corp. Jarrell-Ash Div. Lancaster Laboratories. Inc. Laucks Testing Labs., lnc.

MEl-Charlton. Inc. National Soectroaraohic Laboratories, I h . ' Noah Chemical Nuclide Corp. Nuclide Corp., AGV Div. NUS Corp. Orlando Labs., Inc Perkin-Elmer Coro.. Phvsical Electronics DIG PhotoMetrics, Inc Polyhedron Laboratories Princeton Testing Laboratory, Inc Prochem/lsotopes Radian Corp. Recon Systems, Inc. Rhoads Scientific Co. Sadtler Research Laboratories Foster D. Snell. Inc. Spectrogram Corp. Structure Probe, Inc. Surface Science Laboratories. Inc. Sverdrup/ARO, Inc. TEI Analytical TenEch Environmental Consultants, Inc. Thornton Laboratories. Inc. Tivian Laboratories, Inc. Truesdail Labs.. Inc. United States Testing Co., Inc. Versar. Inc. West Coast Technical Service, Inc. Weston Designers Consultants

organic A & L Great Lakes Agricultural Labs.. Inc. Abcor, Inc American Chemical & Research Laboratories American Standards Testing Bureau, Inc. Analytical Research Labs., Inc. Arro Laboratories, Inc. Atlantic Research Corp. Cambridge Analytical Associates Crippen Laboratories Environmental Research Group Galbraith Labs., Inc. Gollob Analytical Service Huffman Labs., Inc. Hydroscience Inc. Independent Equipment Corp. Industrial Testing Laboratories, Inc. Lancaster Laboratories, Inc. L.aucks Testing Labs., Inc. MEl-Charlton, Inc. Micro-Analysis, Inc. National Spectrographic Laboratories, Inc. Noah Chemical Nuclide Corp. Nuclide Corp.. AGV Div. NUS Corp. Orlando Labs.. Inc. Packard Instrument Co.. Inc. Polymer Evaluation Labs., Inc. Princeton Testing Laboratory, Inc Radian Corp. Recon Systems, Inc. Sadtler Research Laboratories Foster D Snell, Inc. Spectrogram Corp. Structure Probe, Inc. Suntech, Inc. Surface Science Laboratories, Inc. Tecator, Inc. TenEch Environmental Consultants, Inc. Truesdail Labs., Inc. United States Testing Co., Inc. Versar. Inc. Weston Designers Consultants

organometallic Abcor, Inc. American Standards Testing Bureau, Inc. Analytical Research Labs., Inc. Atlantic Research Corp. Cambridge Analytical Associates Crippen Laboratories Environmental Sciences Associates. Inc. Galbraith Labs., Inc. Gollob Analytical Service Huffman Labs., Inc Hydroscience Inc

Industrial Testing Laboratories, Inc. Laucks Testing Labs., Inc National Spectrographic Laboratories, I i c . Noah Chemical Perkin-Elmer Corp.. Physical Electronics Div. Princeton Testing Laboratory, Inc. Radian Corp. Recon Systems, Inc. Sadtler Research Laboratories Spectrogram Corp. Structure Probe, Inc. Surface Science Laboratories, Inc Truesdail Labs.. Inc. United States Testing Co.. Inc. Versar, Inc. Weston Designers Consultants

ENVIRONMENTAL ANALYSIS A & L Great Lakes Aaricultural Labs., Inc. Acurex Corp Analytical Development Corp. Atlantic Research Corp. Betz-Converse-Murdoch, Inc. Cambridge Analytical Associates Canberra Industries, Inc. Coors Spectro-Chemical Lab. Core Laboratories, Inc. D.R. Technology, Inc. Energetics Science Environmental Research Group Environmental Science & Engineering Corp. Environmental Sciences Associates, Inc. Charles Evans & Associates Finnigan Institute Foremost Research GCA Technology Div. Greenwood Laboratories Houston-Atlas, Inc. Huffman Labs.. Inc. Hydroscience Inc. Independent Equipment Corp. Kahl Scientific Instrument Corp Lancaster Laboratories, Inc LFE Corp., Environmental Analysis Laboratories Monsanto Co. Morgan-Schaffer Corp. M. P. K. Omega Co. Nuclide Corp. Nuclide Corp.. AGV Div. Recon Systems, Inc Rhoads Scientific Co. Safety Specialists, Inc. Scott Environmental Technology, Inc. Charles M. Shapiro 8 Sons, P.C. Shrader Analytical. Inc Spectrix Corp. Spectrogram Corp. Suntech, Inc. Sverdrup/ARO, Inc. TEI Analytical Thornton Laboratories, Inc. United States Testing Co., Inc. West Coast Technical Service, Inc.

EQUIPMENT, leasing and renting Buck Scientific, Inc. Coulter Electronics, Inc. Jarrell-Ash Div. Leybold-Heraeus Vacuum Products, Inc. LFE CorD.. Environmental Analysis Laboratories Nuclide Corp. Nuclide Coro.. AGV Div. Science Centre, Inc.

FOOD ANALYSIS A & L Great Lakes Agricultural Labs.. Inc. Acurex Corp. American Standards Testing Bureau, Inc. Analytical Bio Chemistry Labs., Inc Analytical Research Labs., Inc. Applied Reserch Labs. of Fla. Inc. Arro Laboratories, Inc Atlantic Research Corp. California Analytical Labs

Cambridge Analytical Associates CDM/ Accu-Labs Crippen Laboratories Detroit Testing Laboratory, Inc Environmental Science & Engineering Corp. Environmental Sciences Associates, Inc. Foremost Research Gollob Analytical Service Industrial Bio-Test Labs., Inc Lancaster Laboratories, Inc. Laucks Testing Labs.. Inc. LFE Corp., Environmental Analysis Laboratories LiquiFlo Equipment Go. M. P. K. Omega Co. National Spectrographic Laboratories. Inc. Orlando L a b s , lnc Princeton Testing Laboratory, Inc. Radian Corp. Rhoads Scientific Co. Foster D. Snell, Inc. Structure Probe. Inc Tecator. Inc TEI Analytical Thornton Laboratories, Inc. Truesdail Labs., lnc. United States Testing Co., Inc.

GAS ANALYSIS Acurex Corp. Airco. Inc. Air Products & Chemicals, Inc. Allied Chemical Corp. American Chemical & Research Laboratories American Standards Testina Bureau, Inc Analytical Research Labs., Inc. Applied Reserch Labs of Fla. Inc. Atlantic Research Corp. Bacharach Instrument Co California Analytical Labs Chemir Laboratories Coors Spectro-Chemical Lab Core Laboratories, Inc. Crippen Laboratories Detroit Testing Laboratory, Inc Dynatron, Inc. Energetics Science Environmental Research Group Gollob Analytical Service Greenwood Laboratories Houston-Atlas, Inc. Huffman Labs., Inc. Hydroscience Inc. Independent Equipment Corp. Industrial Testing Laboratories, lnc. Kendall Infrared Laboratories Lancaster Laboratories. Inc. Laucks Testing Labs., Inc. LFE Corp., Environmental Analysis Laboratories LiquiFlo Equipment Co. MEl-Charlton, Inc. Morgan-Schaffer Corp. Nuclide Corp. Nuclide Corp., AGV Div. NUS Corp Orlando Labs., Inc. Packard Instrument Co., Inc. Pernicka Corp. Princeton Testing Laboratory Inc. Radian Corp. Recon Systems, Inc. Rhoads Scientific Co. Scientific Gas Products Inc Scott Environmental Technology, Inc Shrader Analytical, Inc Foster D. Snell, Inc. Spectrix Corp. Spectrogram Corp. Springborn Labs. Inc Suntech. Inc. SverdruplARO, Inc Teledyne Isotopes Truesdail L a b s , Inc. United States Testing Co., Inc. West Coast Technical Service, Inc. Weston Designers Consultants

GAS CHROMATOGRAPHY/ MASS SPECTROMETRY Abcor, Inc. Acurex Corp American Standards Testing Bureau, Inc.

Analytical Development Corp Analytical Research Labs.. Inc. Applied Reserch Labs. of Fla. Inc Atlantic Research Corp. Betz-Converse-Murdoch, Inc Biomeasure, Inc. California Analytical Labs Cambridge Analytical Associates Detroit Testing Laboratory, Inc. Environmental Research Group Extranuclear Labs., Inc. Finnigan Institute Foremost Research GCA Technology Div Gollob Analytical Service Hydroscience Inc Industrial Bio-.Test Labs , Inc Laucks Testing Labs., Inc. MEl-Charlton, Inc. Monsanto Co M. P K Omega Co Nuclide Corp Nuclide Corp , AGV Div. NUS Corp Packard Instrument Co., Inc. Princeton Tes.ting Laboratory. Inc. Prochemllsotopes QuadRex Corp Radian Corp Scientific Gas Products Inc. Shrader Analytical. Inc. Spectrix Corp. SverdruplARO, Inc. TEI Analytical Truesdail Labs.. Inc United States Testing Co., lnc Versar. Inc. West Coast Technical Service, Inc. Weston Designers Consultants

GLASS DEVELOPMENT American Standards Testing Bureau. Inc. Galileo Electro-Optics Corp Wheaton Scientific

GRAVIMETRY Actus Environmental Services. lnc. American Standards Testing Bureau, Inc. Analytical Associates, Inc. Analytical Research Labs.. Inc. Arro Laboratories, Inc. Atlantic Research Corp Betz-Converse-Murdoch, Inc. California Analytical Labs CDM/Accu-Labs Coors Spectro-Chemical Lab. Crippen Laboratories Environmental Research Group Galbraith L a b s , lnc Daniel C Griffith & Co., Ltd. Huffman Labs., lnc. Hydroscience Inc Industrial Testing Laboratories, Inc. Laucks Testing Labs., Inc. LFE Corp , Environmental Analysis Laboratories NUS Corp. Orlando L a b s , lnc. Princeton Testing Laboratory, lnc. Radian Corp. Scott Environmental Technology. Inc. Foster D. Snell, Inc. Springborn Labs. Inc. TenEch Environmental Consultants, Inc. Theta Industries. Inc. Truesdail Labs., Inc. United States Testing Co , Inc. Weston Designers Consultants

INDUSTRIAL HYGIENE Actus Environmental Services, Inc. American Chemical & Research Laboratories American Standards Testing Bureau. Inc. Analytical Research Labs, Inc Applied Reserch Labs. of Fla. Inc Retz-Converse-Murdoch. Inc Cambridge Analytical Associates CDMI Accu-Labs Coors Spectrti-Chemical Lab

AUGUST 1980 253

INDUSTRIAL HYGIENE PLASTICS Crimen Laboratories Eneigetics Science Environmental Research Group Environmental Sciences Associates, Inc. Gollob Analvtical Service

Lancaster Laboratories, Inc. LFE Corp.. Environmental Analvsis Laboratories Monsanto Co. National Spectrographic Laboratories, Inc Nuciear Sources & Services, Inc Orlando Labs., Inc Princeton Testing Laboratory. Inc Radian Corp Recon Systems, Inc. Safety Specialists, Inc Scott Environmental Technology, Inc. Foster D. Snell, Inc. Spectrix Corp. Spectrogram Corp. Springborn Labs Inc Structure Probe, lnc. Suntech. Inc TEI Analvtical TenEch Environmental Consultants, Inc. Thornton Laboratories. Inc Truesdail Labs., Inc United States Testing Co., Inc. West Coast Technical Service. Inc Weston Designers Consultants

KINETICS American Standards Testing Bureau, Inc. Extranuclear Labs.. Inc. Radian Corp United States Testing Co., Inc. Weston Designers Consultants

M E T A L ANALYSIS general A & L Great Lakes Agricultural Labs., Inc. Actus Environmental Services, Inc. Acurex Corp. American Chemical & Research Laboratories American Standards Testina Bureau, Inc. Analytical Associates, Inc Analytical Research Labs., Inc. Applied Reserch Labs of Fla. I"P

Arro Laboratories, Inc. Atlantic Research Corp. Atomergic Chemetals Corp. Betz-Converse-Murdoch, Inc Branchemco. Inc. California Analytical Labs Cambridge Analytical Associates CDM/ Accu-Labs Coors Spectro-Chemical Lab. Core Laboratories, Inc. Criooen Laboratories Dei& Testing Laboratory, Inc Environmental Research Group Environmental Science & Engineering Corp Charles Evans 8 Associates Galbraith Labs , Inc GCA Technology Div Gollob Analytical Service Daniel C. Griffith & Co., Ltd. Hydroscience Inc. Illinois Water Treatment Co Industrial Bio-Test Labs., Inc. Industrial Testing Laboratories, Inc. lnterex Corp Jarrell-Ash Div. Koslow Scientific Co Lancaster Laboratories. Inc. Laucks Testing Labs.. lnc. LFE Corp.. Environmental Analysis Laboratories Materials Research Corp MEI-Chariton, Inc. National Spectrographic Laboratories, lnc. Noah Chemical Nuclide Corp.

254 AUGUST 1980

Nuclide Corp , AGV Div NUS Corp Orlando Labs.. Inc. PhotoMetrics, Inc. Princeton Testing Laboratory, Inc. Radian Corp. Rhoads Scientific Go Sadtler Research Laboratories Safety Specia!ists, Inc Scott Environmental Technology, Inc. Foster D Snell. Inc. Soectrix Corm spectrogram Gorp Springborn Labs lnc. SverdrWARO, Inc TenEch Environmental Consultants, Inc Thornton Laboratories. Inc Tivian Laboratories, Inc Truesdail Labs, Inc Union Carbide Corp., Linde Specialty Gas United States Testing Co , Inc Versar, Inc West Coast Technical Service, Inc. Weston Designers Consultants

trace A & L Great Lakes Aaricuitural Labs. Inc. Acurex Corp. American Chemical 8 Research Laboratories American Standards Testing Bureau, Inc. Analytical Associates, Inc Analytical Bio Chemistry Labs., Inc. Analytical Research Labs., inc. Applied Reserch Labs. O f Fla. inc. Arro Laboratories, Inc. Atlantic Research Corp. Atomergic Chemetals Corp Betz-Converse-Murdoch, Inc. Branchemco. lnc. California Analytical Labs Cambridge Analytical Associates CDMIAccu-Labs Coors Spectro-Chemical Lab. Core Laboratories, Inc. Crippen Laboratories Detroit Testing Laboratory, Inc. Environmental Research Group Environmental Science & Engineering Corp. Environmental Sciences Associates. Inc Charles Evans & Associates Ernest F. Fullam, Inc. Galbraith Labs., Inc. GCA Technology Div. General Activation Analysis, Inc. Daniel C. Griffith & Co., Ltd. Hastings Analytical Laboratory Hydroscience Inc. Illinois Water Treatment Co. Industrial Bio-Test Labs.. Inc. Industrial Testing Laboratories, Inc lnterex Corp. Jarrell-Ash Div. Koslow Scientific Co. Lancaster Laboratories, Inc Laucks Testing Labs., Inc. LFE Corp , Environmental Analysis Laboratories MEl-Charlton. Inc. Monsanto Co. National Spectrographic Laboratories. Inc. Noah Chemical Nuclide Corp. Nuclide Coro.. AGV Div.

Radian Corp Rhoads Scientific Co Sadtler Research Laboratories Foster D. Snell. Inc. Spectrix Corp Spectrogram Corp. Springborn Labs. Inc. Sverdrup/ARO. Inc. TEl Analytical Thornton Laboratories, Inc Tivian Laboratories, lnc. Truesdail Labs., Inc.

United States Testing Co., Inc. Versar. Inc. West Coast Technical Service, Inc Weston Designers Consultants

METHODS DEVELOPMENT Actus Environmental Services, Inc Acurex Corp. American Chemical & Research Laboratories American Standards Testing Bureau, Inc. Analytical Associates, lnc. Analytical Bio Chemistry Labs.. Inc. Analytical Development Corp. Analytical Research Labs., Inc. Arro Laboratories, Inc. Atlantic Research Corp. Betz-Converse-Murdoch, Inc. Brandywine Research Laboratory, lnc. California Analytical Labs Cambridge Analytical Associates G. Thomas Cartier Cationics, Inc. CDM/Accu-Labs Chemir Laboratories Core Laboratories, Inc. Coulter Electronics, Inc. Crippen Laboratories Environmental Research Group Environmental Science & Engineering Corp. Charles Evans & Associates Foremost Research Galileo Electro-optics Corp. GCA Technology Div. Gollob Analytical Service Greenwood Laboratories Daniel C. Griffith 8 Co.. Ltd. Hastings Analytical Laboratory Huffman Labs., Inc. Hydroscience Inc. Industrial Bio-Test Labs.. Inc. Industrial Testing Laboratories, Inc Jarreli-Ash Div. Lancaster Laboratories, lnc. LFE Corp., Environmental Analvsis Laboratories National Spectrographic Laboratories, Inc. NUS CorD Orlando Labs., Inc. Polyhedron Laboratories Princeton Testing Laboratory Inc. Radian Corp. Recon Systems, Inc. Rhoads Scientific Co Rolar Corp. Scott Environmental Technology, Inc. Seneca Research, Inc. Shrader Analytical, Inc Foster 0. Snell. Inc Spectrix Corp. Spectrogram Corp Springborn Labs. Inc. Sverdrup/ARO, Inc. TEI Analytical Tivian Laboratories, Inc Truesdail Labs., Inc. United States Testing Co.. Inc. Versar, Inc. West Coast Technical Service, Inc. Weston Designers Consultants

MICROANALYSIS American Chemical & Research Laboratories American Standards Testing Bureau, Inc. Analytical Research Labs, Inc. Atlantic Research Corp Betz-Converse-Murdoch, Inc. California Analytical Labs Cambridge Analytical Associates Coors Spectro-Chemical Lab. Detroit Testing Laboratory, Inc. Environmental Science & Engineering Corp. Environmental Sciences Associates, Inc. Charles Evans & Associates Ernest F Fullam, Inc. Galbraith Labs., Inc. Huffman Labs., Inc. Independent Equipment Corp.

Industrial Bio-Test Labs.. Inc. Industrial Testing Laboratories, Inc Koslow Scientific Co. LFE Corp , Environmental Analysis Laboratories Walter C. McCrone Associates, Inc. MEl-Chariton, Inc. Micro-Analysis, Inc. NUS Corp. Orlando Labs., Inc. Perkin-Elmer Corp., Physical Electronics Div. PhotoMetrics. Inc. Foster 0. Snell, Inc. Spectrix Corp. Structure Probe, Inc Surface Science Laboratories, Inc Truesdail Labs, Inc United States Testing Co , Inc Versar. Inc Weston Designers Consultants

MICROSCOPY American Chemical & Research Laboratories American Standards Testing Bureau, Inc. Analytical Research Labs., Inc. Applied Reserch Labs. of Fla. Inc. Atlantic Research Corp Betz-Converse-Murdoch. Inc. Cambridge Analytical Associates Coors Spectro-Chemical Lab. Crippen Laboratories Delaware Scientific Labs., Inc Detroit Testing Laboratory. Inc. Environmental Research Group Ernest F Fullam. Inc. GCA Technology Div. Industrial Testing Laboratories, Inc. Lancaster Laboratories, Inc LFE Corp., Environmental Analysis Laboratories Walter C. McCrone Associates, inc MEl-Charlton. Inc. NUS Corp. Orlando Labs.. Inc PhotoMetrics, Inc Structure Probe, Inc. Truesdail Labs., Inc. United States Testing Co., Inc. Weston Designers Consultants

NUCLEAR CHEMISTRY American Radiochemical CorD American Standards Testing Bureau, Inc Eberline Instrument Corp. Environmental Research GrouD General Activation Analysis, ' Inc Gollob Analvtical Service Interex Corp. IRT Corp. LFE Cow.. Environmental Analysis Laboratories New England Nuclear Nuclear Sources & Services, Inc NUS Corp. Orlando Labs., Inc. Safety Specialists, Inc. Teledyne Isotopes Truesdail Labs., Inc United States Testing Co.. Inc.

NUTRITIONAL LABELING ANALYSIS American Standards Testing Bureau, Inc. Analytical Bio Chemistry Labs., Inc. Applied Reserch Labs. of Fla Inc California Analytical Labs CDM/ Accu-Labs Crippen Laboratories Foremost Research Industrial Bio-Test Labs., InC Lancaster Laboratories, InC LFE Corp., Environmental Analysis Laboratories Orlando Labs, inc Foster D. Snell. Inc. Tecator, Inc. Truesdail Labs., Inc. United States Testing Co , Inc.

OPTICAL POLISHING Atomergic Chemetals Corp Buck Scientific, Inc. MEl-Charlton, Inc. Newport Research Corp Noah Chemical Truesdail Labs, Inc. Union Carbide Corp.. Electronics Div.

PARTICLE SIZE MEASUREMENT American Chemical & Research Laboratories American Standards Testing Bureau. Inc Arro Laboratories, InC. CDMiAccu-Labs Climet Instruments Co. Coors SDectro-Chemical Lab Coulter Electronics, Inc. Delaware scientific Labs., lnc. Duke Scientific Corp. Dynatron, Inc. Environmental Research Group Foxboro Analytical Ernest F. Fullam, Inc. GCA Technology Div. Gollob Analytical Service Independent Equipment Corp. Industrial Testinq Laboratories. Inc LFE Corp., Environmental Analysis Laboratories Walter C. McCrone Associates, Inc. MEl-Charlton, lnc Micromeritics Instrument Corp. Nationai SDectroaraDhic Laboratories, lhc NUS Corp. Orlando Labs.. Inc Particle Data, Inc PhotoMetrics, Inc. Polyhedron Laboratories Polymer Evaluation Labs.. Inc. Recon Systems, Inc. Scott Environmental Technology, Inc. Foster D. Snell. Inc Structure Probe, Inc Surface Science Laboratories. Inc. Sverdrup/ARO. lnc. TenEch Environmental Consultants. Inc Truesdail Labs.. Inc. United States Testing Co , Inc. Weston Designers Consultants

PETROGRAPHIC EXAMINATION American Standards Testing Bureau, inc. Applied Reserch Labs of Fla. Inc. Coors Spectro-Chemical Lab. Core Laboratories, Inc. GCA Technology Div Walter C. McCrone Associates. Inc. Nuclide Corp. Nuclide Corp.. AGV Div Structure Probe, Inc.

PLASTICS American Standards Testing Bureau, Inc. Analytical Research Labs., Inc. Applied Reserch Labs. of Fla. lnc. Brandywine Research Laboratory, Inc Cambridge Analytical Associates Chemir Laboratories Crippen Laboratories Detroit Testing Laboratory, Inc. Gollob Hastings Analytical Analytical Service Laboratory Industrial Testing Laboratories. Inc. Polyhedron Laboratories Polymer Evaluation Labs., Inc. Foster D Snell. Inc. Structure Probe. Springborn Labs. Inc Inc. Surface Science Laboratories, SverdruplARO. Inc. lnc. Tivian Laboratories, InC. Truesdail Labs., Inc United States Testing Co., Inc West Coast Technical Service, Inc.

SPECTROMETRY POROSIMETRY American Standards Testing Bureau, Inc. Coors Spectro-Chemical Lab. Core Laboratories, Inc. Micromeritics Instrument Corp. Quantachrome Corp. Structure Probe, Inc

PREPARATIVE CHROMATOGRAPHY gas American Standards Testing Bureau, Inc. Betr-Converse-Murdoch, Inc Chem Service, inc Coors Spectro-Chemicai Lab. Core Laboratories. Inc. Detroit Testing Laboratory, Inc. Gollob Analytical Service Johns-Manville Packard Instrument Co.. Inc. Princeton Testing Laboratory, Inc. Radian Corp. Rhoads Scientific Co. Scott Environmental Technology. Inc. Truesdail Labs.. Inc. Weston Designers Consultants

gel permeation American Standards Testing Bureau. Inc. Analytical Bio Chemistry Labs.. Inc Atlantic Research Corp. Cambridge Anaiytical Associates Pharmacia Fine Chemicals Polysciences. Inc. Radian Corp. Rhoads Scientific Co. Springborn Labs. Inc. Truesdail Labs., Inc. Weston Designers Consultants

RADIATION American Radiochemical Corp. Eberline Instrument Corp. LFE Corp.. Environmental Analysis Laboratories New England Nuclear Nuclear Equipment Chemical Corp. Nuclear Sources & Services, Inc Packard Instrument Co.. Inc. Radiation Dynamics, Inc. Safety Specialists, Inc. Teledyne Isotopes Truesdail Labs., Inc.

RADIOACTIVE LABELING American Radiochemical Corp. Anver Bioscience Design, Inc. Biomeasure, Inc. Eberline Instrument Corp. New England Nuclear Nuclear Sources & Services, Inc. Packard Instrument Co., Inc. Research Products International Corp.

RADIOANALYTICAL American Radiochemical Corm

Analytical Development Corp. Applied Reserch Labs. of Fla. Inc. CDMI Accu-Labs Coors Spectro-Chemical Lab. Core Laboratories, Inc. Eberline Instrument Corp. Environmental Science & Engineering Corp Industrial Bio-Test Labs.. Inc. lnterex Corp. LFE Corp., Environmental Analysis Laboratories New England Nuclear Nuclear Sources & Services, Inc. hUS Corp. Clrlando Labs., Inc. Safety Specialists, Inc. Foster D. Snell, Inc. Teledyne Isotopes Truesdail Labs.. Inc.

United States Testing Co., Inc.

RADIOISOTOPE ANALYSIS American Hadlochemical Corp Anerican Standards Testing Bureab, Inc. CDMl Accu-Labs Coors Spectro-Chemical Lab Core Laboratories, Inc. Eberline Instrument Corp. Environmental Research Group Environmental Science & Engineering Corp. Gollob Analytical Service lnterex Corlj LFk Coru , Eiivironmental Analysts Laboratories LNCi Inc New kngland Nuclear Nuclear Sources 8 Services, Inr

NUSCorp. Orlando Labs.. Inc Safety Specialists, Inc. Shrader Analytical. Inc. Teledyne Isotopes Truesdail Labs.. Inc United States Testing Co.. Inc.

REFRACTIVE INDEX MEASUREMENT American Standards Testing Bureau, Inc. Applied Reserch Labs of Fla Inc Atlantic Research Corp lndustriai Testing Laborator 18s. Inc. Laiicaster Laboratories. IIIL LFE Corp , Environmental Analysis Laboratories Walter C. McCrone Associates, Inc Polyhedron Laboratories Foster D Snell. Inc. Truesdaii L a b s , Inc

R&D, contract Abcor. lrlc Acurex Curp. American Radiochemical Corp American Standards Testing Bureau. Inc Analyticdl Bio Chemistry Labs., Inc Analytical Development Corp Anver Bioscience Design. Inc Applied Reserch Labs. of Fla. Inc Applied Science Div Atlantic Research Corp Battelle Memorial Institute Biomeasure. lrlc Biomedical Enterprises, inc Cambridae Analvtical AssocTates ' G. Thomas Cartier Cationics, Inc. CDMIAccu-Labs Chemir Laboratories Core Laboratories, Inc Crippen Laboratories ECO Energetics Science Environmental Scieiice & Engineering Corp Foremost Research Fotodyne, Inc. GCA Technology Div. Gollob Analytical Service Hastings Analytical Laboratory Illinois Water Treatment Co. Lancaster Laboratories. Inc. LFE Curp , Environmental Analysis Laboratories Walter C McCrone Associates, Inc. MEl-Charlton, Inc. Molecular Structure Corp. Morgan-Schaffer Corp Newport Research Corp. Noah Chemical Nuclear Sources 8 Services Inc Nuclide Corp Nuclide Corp., AGV Div OrldndO Labs., Inc. Parish Chemical Co. PCR Resedrch Cheinicals, Inc. PhotoMetrics. Inc Polyhedron Laboratories Polymer Evaluation Labs., Inc Polysciences, Inc Princeton resting Laboratory, Inc

Radian Corp. Recon Systems, Inc. Regis Chemical Rhoads Scientific Co H o l x Corp Schneider lristrunient Co. Scott knvironmental Technology, Inc Seneca Research, Inc Sequemat. Inc Foster D . Snell, Inc. Specialty Organics. Inc Spectrix Corp. Spectrogram Corp Soriiicborn Labs Inc

Tivian Laboratories, Inc Truesdail Labs.. Inc. United States Testina Testing Co.. Inc West Coast Technical Service. Service, inc

Weston Designers Consultants

SCINTILLATION American Standards Testing Bureau, Inc. Analytical Bio Chemistry Labs., Inc Analytical Development Corp. California Analytical Labs CDM/Accu-Labs LFE Corp , knvironmental Analysis Laboratories L G Nester Co. Nuclear Equipment Chemical Corp Nuclear Sources & Services. Inc. NUS Corp. Orlando Labs., Inc. Packard Instrument Co., Inc. Polysciences, Inc Rhoads Scientific Co. Safety Specialists, Inc Foster D. Snell, Inc Teledyne Isotopes United States Testing Co.. Inc.

SEPARATIONS distillation AmeriCdn Standards Testing Bureau, lric Anachemia Chemicals, Inc. Analytical Development Corp Analytical Products, Inc Analytical Research Labs.. Inc. Anver Bioscience Design, Inc. Applied Reserch Labs. of Fla Inc Atlantic Research Corp. Betz-Converse-Murdoch, lnc Cationics. Inc. CDMIAccu-Labs Chem Service, Inc Chemical & Solvent Distillers Co., Inc. Chemir Laboratories Coors Spectro-Chemical Lab. Crippen Laboratories Detroit Testing Laboratory, Inc Environmental Research Group Lollcb Aridlylical Service Hastirrys Analytical Laboratory Independent Equipnient Corp. Ir~dustrial Testing Laboratories, Inc Kiiiy = Laboratory, Inc. LanLaster Laboratories. liic. L F t Coro.. Environmaiital Analysis Laboratories LiquiFlo Equipment Co. Monsanto Co. NUS Corp Orlando Labs , Inc. PCR Research Chemicals Inc POlldrd & CO Polyhedron Laboratories Princeton Testing Laboratory, Inc Radian Corp Recon Systems, Inc Rhoads Scientific Co Rolar Corp. Seneca Research. Inc toster D. Snell, lnc Specialty Organics, Inc. Spectrix Corp. Springborn Labs. Inc. Suntech. Inc. Tecator, Inc. TEI Analytical

TenEch Environmental Consultants. Inc Tivian Laboratories, Inc Truesdail Lbbs.. Inc Wcstor, De=igners Consultants

extraction American Standards Testing Bureau, Inc. Analytical Development Corp. AndIytiCal Research Labs. Inc Anver Bioscience Design. Inc. Applied Reserch Labs of Fla. InL A l i u LdbOratOlleS. InC. AtldiitiC Research Corp. U e t i i o n v e i sa-Murdoch Inc. Urmdywine Research Laboratory, I n C . Cambridae Analvtical AssocTates Cationics, Inc CDM/Accu-Labs Chem Service, Inc. Chemical 8 Solvent Distillers Co , Inc Chemir Laboratories Coors Spectro-Chemical Lab. Crippen Laboratories Detroit Testing Laboratory, Inc Environmental Research Group S. G. Frantz Co , Inc Gollob Analytical Service Hastings Analytical Laboratory Hydroscience inc. Independent Equipment Corp. Industrial Bio-Test Labs., Inc. Industrial Testing Laboratories, Inc Kendall Infrared Laboratories King's Laboratory. Inc. Lancaster Laboratories. Inc. LFE Corp , Environmental Analysis Laboratories Monsaoto Co. NUS Corp OrldndO Labs, Inc Polysciences. Inc Princeton Testing Laboratory, Iris Rddian Corp hecon Systems, Inc Rhoads Scientific Co Seriecd Research, lnc Shrader Analytical. Inc. Foster D Snell. Inc Speciaity Organics, Inc Spectrix Corp. Springborn Labs. lnc. Sverdrup/ARO, Inc Tecator, Inc. TEI Analytical TenEch Environmental Consultants. Inc Tivian Laboratories. Inc Truesdail L a b s , Inc Weston Designers Consultants Whatman, Inc , Chemical Separation Div Whatman Paper Div

ion exchange Americdn Standards Testing Bureau. Inc Arialytical Development Corp. Analytical Research Labs., Inc. Applied Reserch Labs. of Fla. lnc Atlantic Research Corp Betz-Converse-Murdoch. Inc Branchernco. Inc. Cambridge Analytical Associates CDM/Accu-Labs Cheni Service. Inc Chroniatronix, Inc. Coors Spectro-Chemical Lab Crippen Laboratories Greenwood Laboratories Illitlois Water Treatment Co. Iridustrial Testing Laboratories, Inc Lancaster Laboratories, Inc. LFE Corp.. Environmental Analysis Laboratories Mark Instrument Co. Monsanto Co. NUS Corp. Orlando Labs.. Inc. Phdi mucia Fine Chemicals Polysciences Inc Princeton Testing Laboratory, Inc Radian Corp Hhudds Scientific Co. Seneca Research. Inc

The Separations Group (Vydac) Foster D Snell. Inc. Sverdrup/ARO, Inc. TEI Analytical TenEch Environmental Consultants, Inc. Wescan Instruments, Inc Weston Designers Consultants Whatman. lnc.. Chemical Separation Div. Whatman Paper Div.

precipitation American Standards Testing Bureau. inc. Analytical Development Corp. Analytical Research Labs.. Inc Applied Reserch Labs. of Fla. lnc. Arro Laboratories. Inc. Atlantic Research Corp Betz-Converse-Murdoch, inc Cambridae Analvtical Associates Cationics, Inc CDMi Accu-Labs Chem Service. inc. Chemir Laboratories Coors Spectro-Chemical Lab. Crippen Laboratories Detroit Testing Laboratory, Inc. Hastings Analytical Laboratory Independent Equipment Corp. Industrial Testing Laboratories, Inc. Lancaster Laboratories, Inc. LFE Corp , Environmental Analysis Laboratories Monsanto Co NUS Corp Orlando Labs, Inc. Princeton Testing Laboratory, Inc. Radian Corp. Rhoads Scientific Co. Foster D. Snell. Inc Specialty Organics. Inc. Springborn Labs Inc. TEI Analytical TenEch Environmental Consultants, Inc. Tivian Laboratories, Inc. Truesdail Labs., lnc. Weston Designers Consultants

SPECTROMETRY acoustic American Standards Testing Bureau, inc. MEl-Charlton, Inc. Spectrogram Corp

atomic absorption A & L Great Lakes Agricultural L a b s , Inc. Actus Environmental Services, Inc. Acurex Corp. American Chemical & Research Laboratories American Standards Testing Bureau, Inc. Anaiytical Associates, Inc. Analytical Bio Chemistry Labs., Inc. Analytical Research Labs, Inc. Applied Reserch Labs. of Fla. Inc. Arro Laboratories, lnc. Atlantic Research Corp. Betz-Converse-Murdocti, Inc. Buck Scientific, Inc. California Analytical Labs Cambridge Analytical Associates CDMIAccu-Labs Coors Spectro-Chemical Lab. Core Laboratories, Inc. Crippen Laboratories Detroit Testing Laboratory, Inc. Environmental Research Group Environmental Science 8 Engineering Corp. Environmental Sciences Associates, Inc Finnigan Institute Foremost Research Galbraith Labs.. Inc. GCA Technology Div Daniel C. Griffith 8 Co.. Ltd. Hydroscience Inc. Illinois Water Treatment Co. Independent Equipment Corp Industrial Bio-Test Labs.. Inc.

AUGUST 1980 255

SURFACE CHEMICAL ANALYSIS Industrial Testing Laboratories, Inc. lnterex Corp. Lancaster Laboratories, Inc. Laucks Testing Labs., Inc. LFE Corp., Environmental Analysis Laboratories MEl-Charlton, Inc. Monsanto Co. National Spectrographic Laboratories, Inc. New England Nuclear NUS Corp. Orlando Labs., Inc. PhotoMetrics, Inc. Polymer Evaluation Labs., Inc. Princeton Testing Laboratory, Inc. Radian Corp. Rhoads Scientific Co Sadtler Research Laboratories Safety Specialists, Inc Scott Environmental Technology, Inc. Foster D. Snell. Inc. Spectrix Corp. Spectrogram Corp. Springborn Labs. Inc. Suntech. Inc. SverdrupiARO, Inc. TEI Analytical TenEch Environmental Consultants. Inc. Thornton Laboratories, Inc Truesdail Labs., Inc. United States Testing Co., Inc. West Coast Technical Sei'vice, Inc. Weston Designers Consultants

electron spin resonance American Standards Testing Bureau, Inc. Photochemical Research Associates, Inc.

flame emission American Chemical & Research Laboratories American Standards Testing Bureau, Inc. Analytical Associates, Inc. Analytical Bio Chemistry Labs., Inc. Applied Reserch Labs. of Fla. Inc. Arro Laboratories, Inc. Atlantic Research Corp. Atomergic Chemetals Corp. Betz-Converse-Murdoch. Inc. Buck Scientific, Inc. Cambridge Analytical Associates CDMi Accu-Labs Coors Spectro-Chemical Lab. Crippen Laboratories Daniel C. Griffith & Co.. Ltd. Hastings Analytical Laboratory Illinois Water Treatment Co. Industrial Testing Laboratories, Inc. Lancaster Laboratories, Inc. Laucks Testing Labs., Inc. LFE Corp., Environmental Analysis Laboratories National Spectrographic Laboratories, Inc. NUS Corp. Orlando Labs.. Inc. PhotoMetrics, Inc. Princeton Testing Laboratory, Inc. Process & Instruments Corp Rhoads Scientific Co Scott Environmental Technology, Inc. Soectrix Corn. Spectrogram Corp. SverdruplARO, Inc TEI Analvtical TenEch Environmental Consultants, Inc. Truesdail Labs., Inc. United States Testing Co., Inc. Versar, Inc. West Coast Technical Service, Inc.

fluorescence American Chemical & Research Laboratories American Standards Testing Bureau, Inc. Analytical Associates, InC. Analytical Development Corp.

256 AUGUST 1980

Applied Reserch Labs. o f Fla. Inc. Atlantic Research Corp. CDMIAccu-Labs Core Laboratories. Inc. Crippen Laboratories Environmental Science & Engineering Corp. Huffman Labs., Inc. Hydroscience Inc. Industrial Bio-Test Labs., Inc. Lancaster Laboratories, Inc. Mark Instrument Co. MEl-Charlton, Inc. Nuclide Corp. Nuclide Corp., AGV Div. NUS Corp. Orlando Labs., Inc. Photochemical Research Associates, Inc. Pitchford Scientific Instruments Princeton Testing Laborat,,ry, Inc. Radian Corp. Siemens Corp. Foster 0. Snell, Inc Spectrogram Corp. Thornton Laboratories, Inc. Truesdail Labs., Inc. United States Testing Co., Inc. Weston Designers Consultants

infrared American Chemical & Research Laboratories American Standards Testing Bureau, Inc. Analytical Development Corp. Analytical Research Labs., Inc. Anver Bioscience Design. InC Applied Reserch Labs. of Fla. Inc. Arro Laboratories, Inc. Atlantic Research Corp. Brandywine Research Laboratory, Inc. Buck Scientific, Inc. Cambridge Analytical Associates Chemir Laboratories Core Laboratories, Inc. Crippen Laboratories Detroit Testina Laboratory, InC. Environmentar Research Group Finnigan Institute Foremost Research Foxboro Analytical GCA Technology Div Gollob ,Analytical Service Greenwood Laboratories Hastings Analytical Laboratory Huffman Labs., Inc. Hydroscience Inc. Idealab. Inc. Industrial Bio-Test Labs.. Inc. Industrial Testing Laboratories, Inc. Kendall Infrared Laboratories Laboratory For Materials, Inc. Lancaster Laboratories, Inc. Laucks Testing Labs.. Inc. LFE Corp.. Environmental Analysis Laboratories Walter C McCrone Associates, Inc. MEl-Charlton, Inc. Monsanto Co. National Spectrographic Laboratories, Inc. NUS Corp. Orlando Labs., Inc. Polymer Evaluation Labs.. Inc. Princeton Testing Laboratory, Inc. Radian Corp. Sadtler Research Laboratoi.ies Scott Environmental Technoloav. Inc Shrader Anibtical. Inc. Foster D. Snell, Inc. SDectra-Physics, Inc -LPD Spectrix Corp. Springborn Labs. Inc. Suntech. Inc. TEI Analytical Tivian Laboratories. Inc. TrJeSdail - a m . Inc Jniteo States Testing Co , nc h e s ! Coast Tecnncal Service. Inc. Weston Designers Consultants Willey Corp.

mass Acurex Corp. American Standards Testing Bureau, Inc.

A l a i t ca Deve opment Corp Anaiytcal Pesearch L a x nc Applied Reserch Laos of F a nc Atlantic Research Corp Atomergic Chemetals Corp Biomeasure. Inc California Analytical Labs Cambridge Analytical Assodates CDMiAccu-Labs CVC Products. Inc. Detroit Testing Laboratory, Inc. Environmental Research Group Charles Evans & Associates Extranuclear Labs., lnc. Finnioan Institute Forehost Research GCA Technology Div. Gollob Analvtical Service Hydrosciende lnc. LFE Corp., Environmental Analysis Laboratories Walter C. McCrone Associates. Inc. Monsanto Co Morgan-Schaffer Corp. Nuclide Corp. Nuclide Corp., AGV Div NUS Corp. Pernicka Corp. Princeton Testing Laboratory, Inc. Process & Instruments Cor0 Prochemllsotopes Radian Corp Science Centre, Inc Shrader Analytical, InC Spectrix Corp Suntech. Inc. SverdruplARO, Inc. TEI Analytical Teledyne Isotopes Truesdail Labs.. Inc. United States Testing Co., Inc. Versar, Inc. West Coast Technical Seirvice. Inc.

microwave American Standards Testing Bureau, Inc.

nuclear magnetic resonance American Standards Testing Bureau. Inc. Applied Reserch Labs. of Fla. Inc. Biomeasure, Inc Brandywine Research Laboratory, Inc. Finnigan Institute Hastings Analytical Laboratory Industrial Bio-Test L a b s , inc. LND, Inc. Monsanto Co. Morgan-Schaffer Corp New England Nuclear Norell. Inc. Sadt er Research Laooraror.es Snraoer Ana y t caI In: S:ohler sotoDe Chem ca s . ,nc Suntech. Inc. West Coast Technical Service. Inc.

Raman American Standards Testing Bureau, Inc. Chemir Laboratories Walter C. McCrone Associates. Inc. Ne vport Research Corp. spectrogram Corp.

ultraviolet American Chemical & Research Laboratories American Standards Testing Bureau, Inc. Analytical Associates, Inc. Analytical Development Corp. Analytical Research Labs., InC. Anver Bioscience Design, Inc. Applied Reserch Labs. of Fla. Inc. Atlantic Research Corp. Betz-Converse-Murdoch, Inc. Brandywine Research Laboratory, Inc. Buck Scientific, Inc. Cambridge Analytical Assodates

CDM/Accu-Labs Coors Spectro-Chemical Lab Crippen Laboratories Detroit Testing Laborstory, Inc. Environmental Research Group Environmental Science & Engineering Corp. Environmental Sciences Associates. Inc. Foremost Research GCA Technology D!v Green wood Laboratories Daniel C Griffith & Co , Ltd Hydroscience Inc Illinois Water Treatment Co. Industrial Bio-Test Labs., inc. Industrial Testing Laboratories, Inc. Jarrell-Ash Div. Kendall Infrared Laboratories Lancaster Laboratories, Inc. Walter C McCrone Associates.

Laboratories, Inc: Newport Research Corp NUS Corp. Orlando Labs., Inc. Perkin-Elmer Corp.. Physical Eiectronics Div. Polyhedron Laboratories Polymer Evaluation Labs., Inc Princeton Testing Laboratory, Inc. Process & Instruments Corp Radian Corp. Rhoads Scientific Co. Rudolph Instruments Sadtler Research Laboratories Foster D. Snell. Inc. Spectrix Corp. Spectrogram Corp Springborn Labs. Inc. Suntech, Inc SverdrupiARO, Inc. TEI Analytical Thornton Laboratories, InC Truesdail L a b s , lnc. United States Testing Co., InC. West Coast Technical Service, Inc. Weston Designers Consultants

visible American Chemical & Research Laboratories American Standards Testing Bureau. Inc. Analytical Development Corp. Analytical Research Labs.. InC. Anver Bioscience Design. Inc. Applied Reserch Labs. o f Fla. Inc Atlantic Research Corp Betz-Converse-Murdoch. inc. Brandywine Research Laboratory. Inc. Buck Scientific, Inc. Cambridge Analytical Associates CDMIAccu-Labs Coors Soectro-Chemical Lab. .~~ - r C*ippen -aboratories De!roit Testing -a3orator,. nc Env ronmenta Science & Engineering Corp GCA Technology Div General Drug & Chemical Corp Greenwood Laboratories Daniel C Griffith & Co , Ltd Hydroscience Inc Idealab. Inc. Illinois Water Treatment Co Industrial Bio-Test Labs., Inc. Industrial Testing Laboratories, Inc Jarrell-Ash Div Kendali Infrared Laboratories Lancaster Laboratories, Inc LFE Cor0 Environmental Analysis Laboratories Monsanto Co. Newoort Research CorD Orlando Labs., inc. Polyhedron Laboratories Polymer Evaluation Labs., Inc. Princeton Testing Laboratory, ~

~

In,-

Process & instruments Corp. Radian Corp. Rhoads Scientific Co. Sadtler Research Laboratories Safety Specialists, Inc. Foster D Snell, Inc.

Spectrix Corp. Spectrogram Corp. Springborn Labs. Inc. SverdrupIARO, Inc TEI Analytical Thornton Laboratories, Inc Truesdail L a b s , Inc. United States Testing Co , Inc. West Coast Technical Service. Inc Weston Designers Consultants

x-ray diffraction American Standards Testing Bureau, Inc. Applied Reserch Labs of Fla. Inc Atomergic Chemetals Corp. Cambridge Analytical Associates Coors Spectro-Chemical Lab Core Laboratories, Inc Ernest F Fullam. Inc. GCA Technology Div. LFE Corp , Environmental Analysis Laboratories LND. Inc. Walter C. McCrone Associates. Inc. Molecular Structure Corp. Monsanto Co National Spectrographic Laboratories, Inc. Noah Chemical NUS PhotoMetrics, Corp. inc. Polymer Evaluation L a b s , inc. Princeton Testing Laboratory. Inc. Radian Corp. Siemens Corp. Structure Probe, Inc. Suntech, lnc. Truesdail Labs., Inc United States Testing Co.. InC

x-ray energy American Standards Testing Bureau, lnc. Coors Spectro-Chemical Lab. Eberline Instrument Corp LND, Inc Waiter C. McCrone Associates, Inc. MEl-Charlton, Inc. Siemens Corp. Surface Science Laboratories. Inc.

x-ray emission American Standards Testing Bureau, Inc. Applied Reserch Labs. of Fla. Coors Inc. Spectro-Chemical Lab. Core Laboratories, Inc Gollob Analytical Service LND, inc. Monsanto Co. National Spectrographic Laboratories. InC. NUS Corp. PhotoMetrics, Inc. Princeton Testing Laboratory, Inc. Truesdail Labs.. inc. United States Testing Co , Inc

SURFACE AREA MEASUREMENT American Standards Testing Bureau. Inc. Atlantic Research Corp. Coors Spectro-Chemical Lab Detroit Testing Laboratory, Inc Duke Scientific Corp. Foxboro Analytical Gaertner Scientific Corp. MEl-Charlton, lnc Micromeritics Instrument COrp Particle Data, Inc. Quantachrome Corp. Structure Probe. Inc.

SURFACE CHEMICAL ANALYSIS electron spectroscopy for chemical analysis American Standards Testing Bureau, Inc. GCA Technology Div. Industrial Testing Laboratories, Inc.

SURFACE CHEMICAL ANALYSIS ZONE REFINING Walter C. McCrone Associates, Inc. MEl-Charlton, Inc. Perkin-Elmer Corp.. Physical Electronics Div. PhotoMetrics, Inc. Polymer Evaluation Labs., Inc. Radian Corp. Structure Probe, Inc. Surface Science Laboratories, Inc. Truesdail Labs., Inc

Auger spectroscopy American Standards Testing Bureau, Inc. IRT Corp 3M Co., Analytical Systems Perkin-Elmer Corp.. Physical Electronics Div. PhotoMetrics, Inc. Structure Probe, Inc. Surface Science Laboratories, lnc

ion scattering spectrometry

King's Laboratory, Inc. Lancaster Laboratories, Inc Merck 8 Co.. Inc./lsotopes Monsanto Co. Parish Chemical Co. PCR Research Chemicals, Inc. Pfaltz & Bauer. Inc. Pierce Chemical Co. Polyhedron Laboratories Polysciences, Inc. Pressure Chemical Co Prochemllsotopes Radian Corp. Regis Chemical Rolar Coro. Seneca Research. Inc Foster D Sneil, Inc. Soecialtv Oraanics. Inc Sirem ChemTcals. Inc. Tivian Laboratories, Inc.

radioactive compounds American Radiochemical Corp. Anver Bioscience Design, Inc. Applied Science Div Biomeasure. Inc. ICN Pharmaceutical, Inc. New England Nuclear Nuclear Sources 8 Services. Inc. Research Products International Corp. Rolar Corp.

American Standards Testing Bureau, lnc. 3M Co.. Analytical Systems Merck 8 Co., Inc./lsotopes M P K. Omega Co. Nuclide Corp. Nuclide Corp.. AGV Div. NUS Corp PhotoMetrics, Inc.

THERMAL ANALYSIS

secondary ion mass spectrometry

differential scanning calorimetry

American Standards Testing Bureau, Inc. Charles Evans 8 Associates Extranuclear Labs., Inc. 3M Co.. Analytical Systems Walter C. McCrone Associates, Inc. Merck 8 Co , Inc.llsotopes Nuclide Corp Nuclide Corp , AGV Div. NUS Corp. Perkin-Elmer Corp.. Physical Eiectronics Div. PhotoMetrics, Inc Surface Science Laboratories, Inc

SYNTHESIS

American Standards Testing Bureau, Inc. Applied Reserch Labs. of Fla Inc. Atlantic Research Corp Cambridge Analytical Associates Coors Spectro-Chemical Lab Dynatech R/D Co. Netzsch inc. Polyhedron Laboratories Polymer Evaluation Labs , Inc Radian Corp. Springborn Labs. Inc. Structure Probe, Inc. Suntech, Inc West Coast Technical Service, Inc.

general

differential thermal analysis

ALFA Div. American Standards Testing Bureau, inc. The Ames Laboratories, Inc. Anver Bioscience Design, Inc. Applied Science Div. Ash Stevens Inc. Atlantic Research Corp. Biomeasure, Inc. Calbiochem-Behring Corp Cationics. Inc. Chem Service. Inc. Chemical Dynamics Corp Frinton Labs General Drug & Chemical Corp. Hach Chemicai Co Heico Div HexceIiFine Organics

American Standards Testing Bureau, inc Analyticai Research Labs, lnc. Applied Reserch Labs. of Fla Inc Atiantic Research Corp. Cambridge Analytical Associates Coors Spectro-Chemical Lab Dynatech R/D Co. Harrop Laboratories MEl-Charlton, Inc Monsanto Co. Netzsch Inc. Nuclide Corp Nuclide Corp.. AGV Div. The Edward Orton Jr. Ceramic Foundation Polymer Evaluation L a b s , lnc

Sadtler Research Laboratories Springborn Labs. Inc. Stanton Redcroft Structure Probe, Inc. Suntech. Inc. Theta Industries, Inc. West Coast Technical Service, Inc. Weston Designers Consultants

thermal conductivity American Standards Testing Bureau, Inc. Atlantic Research Corp. Betz-Converse-Murdoch, Inc. Core Laboratories, Inc. Detroit Testing Laboratory, Inc Dynatech RID Co. Gollob Analyticai Service Industrial Testing Laboratories, Inc. Lake Shore Cryotronics. Inc MEl-Charlton, Inc. Scott Environmental Technology, Inc. Theta Industries. Inc Truesdail Labs., Inc.

thermogravimetric analysis American Standards Testing Bureau. Inc. Applied Reserch Labs. of Fla. Inc cambridge Analytical Associates Coors Spectro-Chemical Lab. Dynatech R I D Co. Harrop Laboratories Netzsch Inc. The Edward Orton Jr Ceramic Foundation Polymer Evaluation Labs., inc. Sadtler Research Laboratories Springborn Labs Inc Stanton Redcroft Structure Probe, Inc Suntech, Inc. Theta Industries, Inc. West Coast Technical Service, Inc.

thermometric titrations American Standards Testing Bureau, Inc. Tivian Laboratories, Inc. Truesdail Labs., Inc.

TITRIMETRY American Chemical 8 Research Laboratories American Standards Testing Bureau. Inc. Analytical Associates, Inc. Analytical Research Labs.. Inc. Applied Reserch Labs of Fla. Inc Arro Laboratories, Inc Atlantic Research Corp Brandywine Research Laboratory, Inc Cambridqe Analytical Assodates Coors Spectro-Chemical Lab. Crippen Laboratories Environmental Research Group Daniel C. Griffith & Co., Ltd. Huffman Labs., Inc.

Hydroscience Inc. Industrial Testing Laboratories, Inc. Laucks Testing Labs.. Inc LFE Corp.. Environmental Analysis Laboratories M. P. K. Omeaa Co NUS Corp Orlando Labs., Inc Princeton Testing Laboratory. I"?

Foster D. Snell, Inc. Truesdail Labs., Inc. United States Testing Co., Inc. West Coast Technical Service, Inc Weston Designers Consultants

VlSCOSlTY MEASUREMENT Actus Environmental Services, Inc. American Chemical 8 Research Laboratories American Standards Testing Bureau, Inc. Analytical Research Labs., Inc Applied Reserch Labs. of Fla. Inc Arro Laboratories, Inc. Brandywine Research Laboratory, Inc. Brookfield Engineering Labs., Inc. Coors Spectro-Chemical Lab. Core Laboratories, Inc. Crippen Laboratories Detroit Testing Laboratory, Inc. Dynatech R I D Co. Environmental Research Group Hastings Analytical Laboratory Illinois Water Treatment Co. Industrial Testing Laboratories, Inc. Jenaer Glaswerk Schott & Gen., Inc. Kendall Infrared Laboratories Lancaster Laboratories, Inc. Laucks Testing Labs., Inc. MEl-Charlton, Inc. M. P. K Omega Co. Orlando Labs., Inc. Polyhedron Laboratories Polymer Evaluation Labs.. Inc. Princeton Testing Laboratory, Inc. Schott America Foster D . Snell, Inc. Springborn Labs. Inc. Suntech, Inc. Testing Machines, Inc. Truesdail Labs.. lnc. United States Testing Co., Inc.

WATER ANALYSIS A 8 L Great Lakes Agricultural Labs., Inc Actus Environmental Services, Inc. Acurex Corp. American Chemical 8 Research Laboratories American Standards Testing Bureau, Inc. Analytical Associates, Inc. Analytical Bio Chemistry Labs., Inc.

Analytical Research Labs., Inc. Applied Reserch Labs. of Fla. Inc Arro Laboratories, Inc Atlantic Research Corp Betz-Converse-Murdoch. Inc Branchemco. Inc. Cambridge Analytical Associates CDM/Accu-Labs Coors Spectro-Chemical Lab. Core Laboratories, Inc Crippen Laboratories Detroit Testing Laboratory, lnc. Environmental Research Group Environmental Science 8 Engineering Corp. Environmental Sciences Associates, Inc. Finnigan Institute Foremost Research Galbraith L a b s , Inc. GCA Technology Div. General Drug 8 Chemical Corp. Gollob Analytical Service Huffman Labs., Inc Hydroscience Inc Hydro Service 8 Supplies Illinois Water Treatment Co. Independent Equipment Corp. Industrial Testing Laboratories. Inc. lnterex Corp. Kendall Infrared Laboratories Lancaster Laboratories. Inc. Laucks Testing Labs., Inc LFE Coro.. Environmental Analysis Laboratories MEl-Charlton, liic Monsanto Co. M P. K. Omega Co. National Spectrographic Laboratories, Inc. Noah Chemical Nuclide Corp. Nuclide Corp , AGV Div NUS Corp. Orlando Labs , Inc. Polyhedron Laboratories Princeton Testing Laboratory, Inc. Radian Corp. Recon Systems, iric Rhoads Scientific Co. Safety Specialists, Inc Schneider Instrument Co. Science Centre, Inc. Foster D. Snell, Inc. Spectrix Corp. Spectrogram Corp. Springborn Labs. Inc. SverdruplARO. Inc. Tecator. Inc. TEI Analytical TenEch Environmental Consultants, Inc. Thornton Laboratories, Inc. Truesdail Labs.. Inc. United States Testing Co., Inc Versar, Inc. Water 8 Waste Water Systems. Inc. West Coast Technical Service, 1°C

Weston Designers Consultants

ZONE REFINING Atomergic Chemetals Corp Chem Service, Inc Noah Chemical

AUGUST 1980 257