MANUFACTURERS' LITERATURE International Size 1 and Size 2. The CS offers maximum gravities up to 4840 xG (6 X 100 ml.). A multispecd attachment is available for swinging smaller volumes up to 37,950 xG. Model UV offers approximately the same speed as CS but will swing larger volumes. International Equipment Co., 1284 Soldiers Field Road, Boston 35, Mass. 614
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MICROCHEMICAL JOURNAL A QUARTERLY DEVOTED TO THE APPLICATION OF MICROTECHNIQUES IN ALL BRANCHES OF SCIENCE Covers ideas, techniques, procedures
Whether your work brings you into contact daily or only sporadically w i t h micro methods, Niicrochemical Journal is the one literature tool to have always at hand. Articles in clude methods of analysis and detec tion, proof of identity, and other experimentation used wherever very small quantities are involved. You'll find reports of original research, comments on published literature, and many pages of abstracts. The third issue of each year Progress In Microchemistry, offers a critical survey of advances made during that year. The Journal is indexed annually, too. Plus. . . Each issue includes thoughtful, ana lytical reviews of pertinent new books, and a news section on instru mentation and materials. THE EDITORIAL BOARD . . .
Nicholas D. Cheronis, W. J. Kirsten, T. S. M a , S. Natelson, A. A. Benedetti-Pichler, Bella Rosenfeld, Al Steyermark, Eric R. Hoffman Quarterly, $16.00 W r i t e today for sample copy, full in formation, and news of back-issue availability
INTERSCIENCE PUBLISHERS Dept. M (A Division of JOHN WILEY & SONS, Inc.)
440 PARK AVE. S., NEW YORK 16, N.Y. Circle No. 15 on Readers' Service Card 140 A
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ANALYTICAL CHEMISTRY
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Chromatography-Radioactivity Anal ysis. Technical data and performance specifications on a new system for simultaneous chromatography and radioactivity analysis appear in an 8-page bulletin. Bulletin 300. Applied Physics Corp., 2724 South Peck Rd., Monrovia, Calif. 615 Gas Chromatography. A 16-page catalog describing gas chromatography supplies includes supports, phases, column packings, and accessories. Catalog 4. Applied Science Labora tories, Inc., P.O. Box 140, State Col lege, Pa. 616 Electron Microprobe. A 12-page bulletin entitled "EMX Electron Microprobe X-Ray Analyzer with Electron Beam Scanning System" describes ele mental analyses of extremely minute volumes at the surface of solid speci mens. Applied Research Laboratories, Inc., P.O. Box 1710, Glendale 5, Calif. 617 Nuclear Education Kit. Literature is available describing a package kit for nuclear education. It is used for alpha particle detection and for 0.018 k.e.v. beta to 2.7 m.e.v. gamma for liquid samples. Baird-Atomic, Inc., 4925 Fairmont Ave., Bethesda, Md. 618 Distilled Water Items. A 25-gal. wallmounted distilled water storage tank which is sterile ray-equipped protects water from bacteria formation for 30 days or more (Bulletin 171). A line of purity meters for testing water and a controller for testing water which tests each drop of water as it leaves the still are described (Bulletin 175). Barnstead Still and Sterilizer Co., 156 Lanesville Terrace, Boston 31, Mass. 619 Optical-Electronic Catalog Index.
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22-page illustrated index covers optical and electronic products produced by Bausch and Lomb. Catalog L-86. Bausch & Lomb Inc., Department F-46, Rochester 2, Ν. Υ. 620 Microtitrator. A precision titrator, Model 153, for micro and ultramicro samples, is described in a 4-page bulletin. It holds 10 samples, has a built-in vibrating stirrer, and delivers titrant with an accuracy of ±0.01 microliters. Bulletin SB-194. Beck-
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