Beckman INSTRUMENTS, INC

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CALIKIT ^

MANUFACTURERS' LITERATURE Gas Analysis. A 6-page illustrated bulletin, SB C 266-3M, gives specifica­ tions on the company's line of chroma­ tography detectors and katharometers. Included are thermal conductivity cells, hot wire, thermistor, and micro cells, and temperature regulated cells. GOW-MAC Instrument Co., 100 Kings Rd., Madison, N. J. 07940 630

Zone Refining. A 6-page bulletin de­ scribes the design and operation of the Multizone I, an apparatus for the re­ fining of compounds with melting points between room temperature and 300° C. Specifications, a reference list, and a price schedule for the system are included. Materials Research Corp., Orangeburg, Ν. Υ. 10962 631

SSî^ REFERENCE CHEMICALS Calikits contain 12 highly purified, reliable reference chemicals for quantitative and qualitative analyses in gas chromatography and absorption spectroscopy. Calikit No. 1

Fatty Acid Methy\ Esters (100 mg each) Caprylic Acid Arachidic Acid Capric Acid Palmitoleic Acid Laurie Acid Oleic Acid Myristic Acid Linoleic Acid Palmitic Acid Linolenic Acid Stearic Acid Arachidonic Acid* #139501W $65.00 * 9 0 + % pure. All other fatty acid methyl esters have purities of 98% or better.

Calikit No. 2

Lindanef Guthionf p, p-DDT Toxaphene Parathion 2, 4 - D t

Pesticides (5 g each) DDVP Chilordane p, p-DDD Methyl Parathiont Heptachlort Dieldrin

#139502W

$50.00

Column Chromatography. A rigid, fine bead, cross-linked polystyrene packing material, Styragel, has been developed for use in elutions with or­ ganic solvents. A new brochure, which explains the use of this gel in liquid column chromatography, includes illus­ trative separation curves and a bibli­ ography. Waters Associates, Inc., 61 Fountain St., Framingham, Mass. 632

n-Hexane n-Nonane n-Dodecane n-Octadecane n-Heptane n-Decane

n-Alkanes (5 ml each) n-Tetradecane n-Eicosane* n-Octane n-Lndecane n-Hexadecane n-E'ocosane*

#139503W *98%

$30.00

Density Determination. A new bulle­ tin outlines the preparation, calibra­ tion, and applications of the density gradient column, an apparatus for the rapid, accurate density determination of irregular solids. Typical solvent sys­ tems and a reference list are included. Techne (Princeton) Ltd., 661 Bruns­ wick Pike, Princeton, N. J. 634

pure. All others n-alkanes 99% or better.

Mail p u r c h a s e order to Reference Chemicals Product Manager, Beckman Instruments, Inc., 2500 Harbor Blvd., Fullerton, California 92634.

Beckman

I N S T R U M E N T S , INC. SCIENTIFIC AND PROCESS INSTRUMENTS DIVISION FULLERTON, CALIFORNIA • 92634

I N T E R N A T I O N A L S U B S I D I A R I E S : GENEVA; M U N I C H ; G L ε N R O T H E S , S C O T L A N D ; TOKYO; P A R I S ; CAPETOWN; L O N D O N ; MEXICO CITY

Circle No. 37 on Readers' Service Card

flexible healing products

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heating

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insulating

Magnetic Field. Bulletin 316 describes the Braunbek magnetic environment system, which provides magnetic free space in the low gamma intensity range and uniform fields to 10 gauss. Appa­ ratus includes 12 field coils, a magne­ tometer, and desk console for power amplification and anomaly compensa­ tion. Gammaflux Corp., Richland Acres, Sterling, Va. 635

jackets covers

PROMPT DELIVERY •

from stock for many standard apparatuses

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quick production of "specials"

-3k?V

mm.

US

Laboratories the country over s p e c i f y Briskeat to be sure they get t h e most r e l i able . . . the fastest. READY TO S H I P are heat­ i n g j a c k e t s and i n s u l a t i n g covers for many appara­ tuses. PROMPT PRODUC­ T I O N of " s p e c i a l s " is r o u t i n e . . . c o m p l e x or s i m p l e s h a p e s , large or small sizes. Typical Briskeat items: „