Manufacturers' Literature Micropipettors This brochure describes the expanded line of variable volume Finnpipettes which provide complete coverage of volumes from 1-5,000 μ\ with only five units. Variable Volumetrics, Inc. 439
Low-Temperature Liquid Coolers
This 36-p catalog describes the ultrapure Ultrex brand materials. Nearly 100 ultrapure, highly defined products are listed, including several new met als, metal oxides, and fiber optic re search materials. J. T. Baker Chemical Co. 441
Laboratory instruments and equip ment are featured in this 24-p catalog. New items include a liquid sample concentrator, hollow cathode lamps, and a constant temperature bath. Tekmar Co. 443
Catalogs
Low-pressure controls and gages for air and gas systems control are fea tured in a 100-p catalog. Dwyer In struments, Inc. 444
Catalog C-107, the revised guide to Baker's diagnostic products, con tains more than 300 listings and pro vides an actual lot analysis for each product. J. T. Baker Diagnostics 450
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SALE
P.O. Box 1388 (201)568-0224
ANALYTICAL CHEMISTRY
90%CARB0N-13?
Instantaneous Scanning of Gas Chromatographic Effluent
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CHEMICAL IONIZATION
J°)/VALYT/CAL
203-226-7131
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47 Industrial Road, Berkeley Height!, N.J. 07922-20H64 3331
p-Aminohippuric Acid · m-Aminophenol · 1-Benzyl-4-piperidone a-Bromo-p-Chloroacetophenone · Cuprous Bromide · Desoxyanisoin Diacetyl Monoxime · 2,2'-Dipyridyl · Esculin · Ethyl Levulinate p-Hyclroxybenzonitrile · o-lodobenzoic Acid · L-Malic Acid · Maltose DL-Mandelic Acid · Mercuric Potassium Iodide · o-Nitrobenzaldehyde Phenolphthalein · Proflavine Sulfate · Rhodizonic Acid, Κ & Na Salts Sodium Diethyldithiocarbamate · Sodium Dithionate · Succinimide Tliiosemicarbazide · Toluidine Blue · o-Vanillin · Xanthone · Xylose for our Products List o f over 3 , 0 0 0 chemicals
Tel.: 516-273-0900
TWX: 510-227-6230
EASTERN CHEMICAL D i v i si o n o f G U A R D I A N C H E M I C A L C O R P .
F o r l o w e s t p r i c e s , call (415) 234-4130 or w r i t e f o r o u r n e w e s t i s o t o p e c a t a l o g .
Englewood Cliff, N.J. 07632
MASS SPECTROMETRY
50 W e s t S t a t e S t r e e t W e s t p o r t , C t . 06880
B ° * 2500 κ H A U PPA U G E ,
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V O L . 4 7 , N O . 14, DECEMBER 1 9 7 5
For more information on listed items, circle the appropriate numbers on one of our Readers' Service Cards
SUPPLY CENTER
One GLC — Hewlett Packard Used Approximately One Month Price of $10,000 includes all attachments BIOMETRIC TESTING, I N C .
Rates Available on Request
ANALYTICAL CHEMISTRY,
A new 46-p catalog contains descrip tions and information on columns and operating supplies for H P ana lytical instrumentation. HewlettPackard Co. 451
A new 8-p catalog features tempera ture measurement and recording instruments. William Wahl Corp. 448
FOR
1304 A ·
"What's New in Gas Chromatogra phy" features supplies for environ mental analysis. Listed are vinyl chloride, PAH's, PCB's, PCT's, and other standards together with many newly developed laboratory accesso ries. Analabs, Inc. 449
Over 2,500 tools for electronic as sembly and precision mechanics are featured in a 112-p catalog. Jensen Tools and Alloys 445
LABORATORY
Write
A 140-p catalog includes description, specifications, and safety information on specialty gases and related equipment. Air Products and Chemi cals, Inc. 446
The 35th edition of Laboratory Sup ply News, 64 p, features a greatly in creased section of Teflon laboratory items. Laboratory Supplies Co., Inc. 442
Bulletin LC-2, 2 p, describes the oper ation of mechanically refrigerated sys tems with flexible monel probes for operation to -100°C. F T S Systems, Inc. 440
The current 1975-1976 List of ASTM Publications contains 30 pages and lists more than 600 ASTM publica tions dealing with the standardization of methods of test and specifications for materials, the knowledge of mate rials, and materials evaluation. Ameri can Society for Testing and Materials, A. L. Batik, 1916 Race St., Philadel phia, Pa. 19103
A new 16-p catalog pictures, specifies, and prices over 250 items of Pyrex brand laboratory glassware. Markson Science, Inc. 447
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32nd & Griffin, R i c h m o n d , C A 94804
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DEUTERIUM OXIDE? 99.8 mol7o/100.0 mol7o For new low prices call: (415) 234-4130
fÈAW^XX^JaloiAtotie^ 32nd a n d Griffin A v e . , Richmond, California
CLASSIFIED SECTION European manufacturer of new emission spectrometer seeking representative in NE section of USA by well established company able to provide efficient service. Instrument is suitable for both research and industrial pro duction. Obtain additional information through Betty Petroskl, Finnish Trade Office, One IBM Plaza, Chicago, II. 6 0 6 1 1 . Phone 3 1 2 / 467-6767.
