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meters, detectors, gas supply, recorders, and col- ... the entire G/C and recorder function with no ... High quality vinyl coated Time Tape comes in 1...
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INDEX TO ADVERTISERS IN THIS ISSUE *Varian Associates Botsford, Constantine & McCarty, Inc.

108

*The Welch Scientific Co Armstrong-Desmond Advertising, Inc. *Tohn Wiley and Sons, Inc Ed McLean & Co., Inc. •Wilks Scientific Corp A. B. W. Toft & Co. M. Woelm Linder Presse Union GMBH

32

Los Angeles 90045 . . . Clay S. Holden, Lynn Gaskill, Reinhold Publishing Corp., 8939 So. Sepulveda Blvd., 213-776-0552 REINHOLD PUBLISHING CORPORATION

129

San Francisco 94109 . . . Clay S. Holden, Lynn Gaskill, Reinhold Publishing Corp., 415-421-8080

Advertising Management for the American Chemical Society Publications

Denver 80203 . . . Robert H. Heidersbach, Roy McDonald Associates, Inc., 846 Lin­ coln St., 303-825-3325

430 Park Ave., New York, Ν. Υ. 10022

30

Cable Address:

REINPUB NYK

Houston 77006 . . . Frank N. Vickrey, Roy McDonald Associates, Inc., 3130 South­ west Freeway, 713-529-6711

98 Thomas N. J. Koerwer Advertising Sales Director, ACS Publications

"Yellow Springs Instrument Co., Inc. Odiorne Industrial Advertising, Inc.

131

"Carl Zeiss, Inc Michel-Cather, Inc.

107

Laboratory Supply Center Alpha Metals, Inc. Bio-Rad Laboratories Burdick & Jackson Laboratories, Inc. Eastern Chemical Corp, GCA Corporation C. Giese Kg. Gollob Analytical Service Gulf General Atomic, Inc. He m co Corp. Industrial & Scientific Information Ser­ vices LaMottc Chemical Products Co, Petroleum Analytical Research Corp. Schwarzkopf Microanalytical Labora­ tory! Southwestern Analytical Chemicals Henry Troemncr, Inc.

144

Tulsa 74114 . . . Max C. Nelson, Roy Mc­ Donald Associates, Inc., 2570 South Harvard Ave., 918-742-9961

Arthur P. Watts Advertising Sales Manager, AC J. Barry Stanford Assistant Advertising Sales Manager, AC

Great Britain and Western Europe . . . Brayton Nicholas, The American Maga­ zine Group, 44 Conduit Street, London, W. 1, England

SALES REPRESENTATIVES New York 10022 . . . Arthur P. Watts, J. Barry Stanford, Frank Ryan, Murray Strelitz, Reinhold Publishing Corp., 430 Park Ave., 212-688-8600

Japan . . . Bancho Koheki Co., Ltd., 8 Shinanomachi, Shinjuku-ku, Tokyo, Ja­ pan

Philadelphia 19107 . . . James A. Byrne, Reinhold Publishing Corp., 12 So. 12th St., 215-022-0346

PRODUCTION DEPARTMENT

Chicago 60603 . . . Eugene P. Eldridge, Reinhold Publishing Corp., 10 So. La Salle St., 312-726-1282

Alfred E. Gall Advertising Production Director ACS Publications

Cleveland 44114 . . . Michael Hayes, Rein­ hold Publishing Corp., East Ohio Bldg., 1717 East 9th St., 216-771-4011

Anne Forrest Advertising Production Manager, Analytical Chemistry

*See ad in ACS Laboratory

RHO-LOCK GAS CHROMATOGRAPH TEST SET

Guide

LABORATORY LABELING SYSTEMS

A new a n d u n i q u e t e s t s e t for effectively localizing malfunctions in electro­ meters, detectors, gas supply, recorders, a n d col­ umns. Pinpoints specific causes of excessive noise, lack of s i g n a l , i n s t a b i l i t y , h u n t i n g of r e c o r d e r t r a c e , round t o p peaks, recorder dead spots, etc. A reliable reference signal enables t h e operator to e a s i l y t e s t t h e w o r k i n g of t h e e n t i r e G/C a n d r e c o r d e r f u n c t i o n w i t h no d e t a i l e d electrical knowledge neces­ sary. Establishes instru­ ment standards which can be r e f e r r e d t o s h o u l d per­ f o r m a n c e of t h e e q u i p m e n t be in d o u b t or a s a c o m ­ p a r i s o n for a r e p a i r e d u n i t .

Time pressure-sensitive Tapes and Labels provide a versatile system of identification for every laboratory. Stock labels for animal cages, microscope slides and photo-slides. Custom imprints to your specifications including consecutive num­ bers. High quality vinyl coated Time Tape comes in 17 colors, can be marked with pen or pencil, sticks to any surface (plastic, glass, metal, paper, cloth) and will withstand temper­

220-10AC-RHO-LOCK G / C TEST SET, FOR U S E W I T H F L A M E IONIZATION, THERMAL CONDUCTIVITY A N D THERMISTOR D E T E C T O R S , c o m p l e t e w i t h l e a t h e r c a r r y i n g c a s e , s e l e c t i o n of t e s t l e a d s a n d i n s t r u c t i o n s for u s e . $210.00

RHO

SCIENTIFIC, INC.

P.O. BOX 295, COMMACK, N.Y. 11725 Tele: (516) 543-1919 Circle No. 23 on Readers' Service Card 146 A

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ANALYTICAL CHEMISTRY

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P R O F E S S I O N A L T A P E CO., INC. 3 6 3 EAST B U R L I N G T O N R I V E R S I D E , I L L I N O I S

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