INDEX TO ADVERTISERS IN THIS ISSUE Arro Laboratories Arro Laboratories
796A
•Barnes Engineering Company Albert A. Kohler Company, Inc. ••Bausch & Lomb, Analytical Systems Div Wolff Associates, Inc. Bethlehem Apparatus Company, I n c . . Beaumont, Heller & Sperling, Inc. *Bio-Rad Laboratories Fred Schott & Associates Brinkman Instruments, Inc Blatt Advertising, Inc. Buchler Instruments Div. Searle Analytic Jaffe Advertising
•Columbia Scientific Industries Evans & Associates
783A
J E O L Analytical Instruments, Inc 834A-835A Weinrich Associates, Inc.
Kontes Glass Company Aitkin-Kynett Company, Inc.
Fl 830A 838A
Advertising Management American Chemical Society •Labindustries Fred Schott Associates •Leeds & Northrup Company Schaefer Advertising, Inc.
772A
OBC 768A
•Mallinckrodt Chemical Works 771A Batz, Hodgson, Neuwoehner, Inc. • M e t t l e r Instrument Corporation 837A, 839A, 841A Harris D. McKinney, Inc.
826A
815A 816A
•Eastman Kodak Company Rumrill-Hoyt, Inc. • E M Laboratories, Inc Kenyon Hoag Associates
769A
Finnigan Corporation Bachrach Advertising
776A
803A
• G C A , Precision Scientific Tri-State Advertising
IFC
• H a m a m a t s u Corporation Unlimited Sales Assistance •Hamilton Company Mealer & Emerson, Inc. Harleco Div., American Hospital Supply Corp Graphic Productions •Hellma International, Inc Miller Advertising Agency * Hewlett P a c k a r d , San Diego Div. . . . Phillips Ramsey Advertising Hewlett P a c k a r d , S I D Dancer Fitzgerald Sample, Inc. •Houston Instruments Ray Cooley & Associates
•Instrumentation Laboratory. . Aries Advertising, Inc.
770A 790A
CENTCOM, LTD. T h o m a s N . J. Koerwer, President; Clay S. Holden, Vice President; Benjamin W. Jones, Vice President; Robert L. Voepel, Vice President; C. Douglas Wallach, Vice President; 50 West State Street, Westport, Connecticut 06880 (Area Code 203) 226-7131 A D V E R T I S I N G SALES M A N A G E R Thomas N. J. Koerwer SALES R E P R E S E N T A T I V E S Chicago . . . Eugene Eldridge, C E N T C O M , L T D . , 540 Frontage Rd., Northfield, 111. 60093. 312-441-6383. Cleveland . . . Michael H a y e s , C E N T C O M , L T D . , 20340 Center Ridge Rd., Rocky River, Ohio 44116. 216-331-2324.
Ortec.Inc Thomas R. Sundheim, Inc.
789A
P a c k a r d Instruments M a n d a b a c h & Simms, Inc. Phillips Electronic Instruments J & M Condon, Inc.
836A . 840A-841A
RCA Electronic Components Al Paul Lefton Company, Inc.
IBC
Scientific Products Mitchel Suttner McPhilliamy, Inc. Scientific Research Instruments Advertising Etc. Spectra Physics Regis McKenna, Inc. Spex Industries Seymour Nussenbaum Commercial Art Service System Industries System Industries
807A 814A 808A 827A
Houston . . . Michael Hayes, C E N T C O M , L T D . , 216-331-2324 Denver . . . Clay S. Holden, C E N T C O M , L T D . , 213-776-0552. Los Angeles 90045 . . . Clay S. Holden, C E N T C O M , L T D . , Airport Arcade Bldg., 8820 S. Sepulveda Blvd., Suite 215,213-776-0552 New York 10017 . . . Richard L. Going, C E N T C O M L T D . , 60 East 42nd St., 212-972-9660 Philadelphia . . . Robert E. Moran, Eastern Regional Sales Manager, C E N T C O M LTD., 535 Pennsylvania Avenue, Fort Washington, P a . , 19034. 215-643-2586. San Francisco . . . Clay S. Holden, C E N T C O M , L T D , 213-776-0552 Westport 06880 . . . Don Davis, C E N T C O M , L T D . , 50 West State Street, 203-2267131.
819A
Great Britain and Western Europe . . . Malcolm Thiele, Technomedia Ltd., Wood Cottage, Shurlock Row, Reading RG10 O Q E , Berkshire, England.
793A-794A
J a p a n . . . H a r u o Moribayashi, International Media Representatives, Ltd., 1 ShibaKotohiracho, Minato-Ku, Tokyo, Telephone 502-0656.
778A 830A 763A
for the Publications
782A
Nicolet Instrument Corporation Hagen Advertising, Inc.
767A,
Bio-Rad Isotope Division Eastern Chemical (Div. of Guardian Chemical Corp.) Gallob Analytical Service Corp. Southwestern Analytical Chemicals
844A
764A
• D o h r m a n n D i v . of Envirotech Fred Schott & Associates •DuPont Instruments N. W. Ayer & Son, Inc.
LABORATORY SUPPLY CENTER 842A
•Arthur H. Thomas Company Harris D . McKinney, Inc.
774A 796 A
780A-781A
**Company
•Varian Ahern Advertising Agency
806A
• W a t e r s Associates. Edward W. Fischer & Associates
803A
so marked
PRODUCTION DEPARTMENT Production Director Joseph P . Stenza
*See ad in ACS Laboratory Guide has advertisement in the foreign regional
Advertising Production Assistant Alice M . Hansen
edition
only.
ANALYTICAL CHEMISTRY, VOL. 46, NO. 9, AUGUST 1974 · 843 A