INDEX TO ADVERTISERS IN THIS ISSUE •Academic Press, Inc. Flam m Advertising •American Instrument Co., Div. of Travcnol Laboratories, Inc Industrial Advertising Associates Analog Technology Corporation *Applied Research Laboratories, Sub. of Bausch & Lomb T. F. Murray and Associates, Inc. ArRo Laboratories * Bausch & Lomb, Analytical S v stems Division 308A, WollV Associates, Inc. *Beckman Instruments, SID Division N. W. Ayer/Jorgenscn/ MacDonald. Inc. *Bio-Rad Laboratories Fred Schott & Associates *Brinkman Instruments, lnc Blatt Advertising, Inc. Brooklyn Thermometer Company. ,. . Snow & Depcw Advertising. Inc. *Burdick & Jackson Laboratories, Inc Studio 5 Advertising, Inc. *Cahn Instruments Emerson & Mcalcr, Inc. R. P. Cargillc Laboratories, Inc. John H. Dalzoll *Carle Instruments, Inc Marketing Directions, Inc. **Cathodeon, Ltd Lovell and Rupert Curtis. Ltd. Chemical Research Services, Inc. . . . Ross Llewellyn, Inc. Corco Chemical Corporation Charles D . Karlsruher Advertising *CVC Products, Inc Blair Advertising. Inc. *Crawford Fitting Company Falls Advertising C o m p a n y Digital Equipment Corporation.. 316A, Schneider Parker. Inc. DuPont Instruments N . W. Aycr & Son, Inc. * Eastman Kodak Company Rumrill-Hoyt, Inc. Elkay Products Don Hodes Advertising, Inc. ELSCINT, Inc Hauser Associates * E M Laboratories, Inc. Kcnyon Hoag Associates *Engefhard Industries, Div. of Engelhard Minerals and Chemicals Corporation Keyes, Martin & C o m p a n y Environmental Science Associates. . . . Val Laughner Associates, Inc. Finnigan Corporation 300A, John Feack Advertising *Fisher Scientific Company Tech-Ad Associates *Floridan; A Member of the ITT System Marstellcr, Inc. *Forma Scientific, Inc. E-LEE Advertising Agency *GCA/McPherson Instrument Culver Advertising. Inc. *GCA/Prccision Scientific Tri-State Advertising C o m p a n y , Inc. •Gilford Instrument Laboratories, Inc The Bayless-Kerr C o m p a n y GOW-MAC Instrument Company . Kcnyon Hoag Associates *Hamamatsu Corporation Mandabach & Simms, Inc.* Hamilton Company Mealer & Emerson, Inc. * Instrumentation Laboratory, Inc.. . . Schneider Parker, Inc.
392A 293A 387A 332E 347A 327A 380A 384A OBC 389A 389A 294A 385A 342A F2 385A 388A 330A 332II
**Company
317A 332F 377A 339A 388A 297A
3321 315A 301A 359A 378A 382A 335A 382A
332A 306A 385A 332G 310A
JEOL Analytical Instruments, Inc. . 332C-D Wcinrich Associates, Inc. J-Y Optical Systems 386A Designsense Laboratory Data Control Tech Communicators, Inc. Leeds & Northrup Company Schaefer Advertising. Inc. Lindberg Division, Sola Basic Industries Fensholt Marketing Communications 3M Company/Staff Marketing Services D'Arcy-MacManus tit Masius Advertising *Mettler Instrument Corporation. . . . Harris D . McKinney, Inc.
337A
314A
Advertising Management American Chemical Society
304A
* Orion Research Inc. OBC Advertising Ortec, Inc. Thomas R. Sundheim. Inc.
299 A
CENTCOM. LTD. Thomas N . J. Kocrwcr, 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
340A A D V E R T I S I N G SALES M A N A G E R Thomas N. J. Koerwer
383A
351A
Packard Instruments 303A Mandabach & Simms, Inc. PARR Instrument Company 330A F. Willard Hills Advertising Service Pcmlab Company 361A *The Perkin Elmer Corporation 312A, 348A, 349A.371A Marquart & Roche. Inc. * Pharmacia Fine Chemicals 345A Cummins. MacFail &. Nulry. Inc. **Philips Industries- Pollution Monitoring Dept F3 C. J. Nicholl & Associates, Ltd. * Precision Sampling Corporation- . . . 328A David M. Klock and Associates Princeton Applied Research Corporation 365A The Message Center. Inc. **PYE UNICAM, Ltd Fl Rainin Instrument Company, Inc.. . . . 373A Robert J. Allen Rank Hilger 322A, 323A Centrum Industrial Marketing, Ltd. *Sargenl-Wclch Scientific Company . . 332B,362A Polytcch Advertising Schleicher & Schuell 374A Weston Associates. Inc. Scientific Research Instruments Corporation 331A Advertising, Etc., Ltd. *SGA Scientific, Inc 352A Lakcwood Advertising Agency Sola Basic Industries, Lindbcrg Division 314A Fensholt Marketing Communications *Spcx Industries 375A Seymour Nussenbaum Commercial Art Service 382A IFC
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 Rcl., INorthfield, 111. 60093. 312-441-6383. Cleveland . . . Michael H a y e s , C E N T C O M , LTD., 20340 Center Ridge Rd., Rocky River, Ohio 44116. 216-331-2324. Houston . . . Michael H a y e s , C E N T C O M , L T D . , 216-331-2324 Denver . . . Clav 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 P h i l a d e l p h i a . . . William Ripetto, C E N T C O M LTD., 535 Pennsylvania Avenue, Fort Washington, Pa., 19034. 215-643-2586. San Francisco . . . Clav 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, 203-226, 7131. London, England . . . Malcolm Thiele, Technomedia Ltd., Warwick House, 9 W a r wick St., London, WIR 6 L S . Telephone: 01-437-5461 Manchester, England . . . Malcolm Thiele, Technomedia Ltd., 8 Fernhill, Mellor, Stockport, SK6 5AN. Telephone: 0614275 Reading, England . . . Malcolm Thiele, Technomedia Ltd., Wood Cottage, Shurlock Row, Reading, RG10 O Q E . Telephone: 073-581-302 Paris, France . . . J a c k Andersen, Technomedia Ltd., 18 Rue Gounod, 92 SaintCloud, Paris. Telephone: 602-24-79 Tokyo, J a p a n . . . Haruo Moribayashi, International Media Representatives Ltd., I 1, Shibe-Kotohiracho,Minato-ku,Tokvo. Telephone: 502-0656
United Systems Corporation 350A Advertising & Merchandising. Inc. *Varian 367A, 369A Ahern Advertising Agency
so marked
for the Publications
341A
373A
* Whatman, Inc. (formerly H. Reeve Angel) J. S. Lanza & Associates
390A
Bio-Rad Isotope Division Eastern Chemical Div. of Guardian Chemical Corp. Koch Isotopes R H O Scientific, Inc.
IBC
*NesIab Instruments Goodhue/Gunthcr Advertising. Inc. Nicolet Instrument Corporation Technical Communications Nuclear Semiconductor The House Agency
Teledyne Isotopes Mead Associates *Tracor Northern Dave Carman & Associates, Inc.
L A B O R A T O R Y SUPPLY CENTER
360A
*See ad in ACS Laboratory Guide has advertisement in the foreign regional
PRODUCTION D E P A R T M E N T Production Director Joseph P. Stenza Advertising Production Assistant Alice M. Hansen
edition
only.
ANALYTICAL CHEMISTRY, VOL. 47, NO. 3, MARCH 1975 · 391 A