MANUFACTURERS' LITERATURE Stationary Phases for Gas Chroma tography. The third edition of "Guide to Stationary Phases for Gas Chroma tography," which covers the literature to January 1, 1966, has been published. The 400 references in the 49-page book let are indexed according to the materi als separated. Analabs, Inc., P.O. Box 5215, Hamden, Conn. 619 Nuclear System. Brochure 500 gives specifications and prices for the Model 2517 precision GM counting system and accessories and for the company's transistorized sealer/timer. Nuclear Supplies, Inc., P.O. Box 312, Encino, Calif. 91316. 620 Recorder. Bulletin MR, 8 pages, de scribes the new Model MR recording potentiometer. E.H. Sargent & Co., 4647 W. Foster Ave., Chicago, 111. 60630. 621 Collagenase
Determination.
A
4-
page pamphlet, "A New Collagenase Substrate, Discussion and Instructions for Use," describes the procedure for using the new substrate, a chromophore-acyl-pentapeptide. Mann Re search Laboratories, Inc., 136 Liberty S t , New York, Ν. Υ. 10006. 622 Fluorocarbon Products. A bulletin on products of Kel-F and Teflon lists 43 technical reports dealing with the use and technology of fluorocarbon prod ucts. The Fluorocarbon Co., Change Bridge R d , Pine Brook, N. J. 623 Electrode Kit. Catalog 150, 24 pages, contains complete descriptions of the electrode Kem-Kit components and as sembly instructions for student use. Kontes Glass Co., Vineland, N. J. 624 Infrared Spectrophotometer. Bulle tin 7091, 4 pages, describes the features of the new Microspec infrared spectro photometer. Beckman Scientific and Process Instruments Division, 2500 Harbor Blvd., Fullerton, Calif. 92634. 625
Gel Electrophoresis. A 6-page book let, "Separate, Analyze, Recover—A Total System for Gel Electrophoresis," describes a complete system for sepa rating, destaining, and recovering solu ble proteins and describes the analysis of stained patterns. E-C Apparatus Corp., 222 S. 40th St., University City, Philadelphia, Pa. 19104. 626
How
LAB-CREST 310 Makes Gas Chromatography A Versatile Research Tool • Accepts All High-Sensitivity Detectors—Argon ionization, hydrogen flame, cross-section, electron capture—even two types simultane ously. Plug-in detectors interchange in seconds. One standard electrometer provides 5 ranges of input impedance to accommodate the detectors. No accessories or batteries required. • Accepts All Columns—Single or dual; analytical, semi-preparative, or capillary; all with on-column injection. Fittings make column changes easy without tools even while hot. • Operates Isothermally or Temperature-Programmed — Fully propor tional, solid-state, direct reading controller holds column oven tem perature within 0.5° C. at any selected value to 500° C. Optional solid-state programmer raises column temperature at any of 6 differ ent rates from 0.5° to 10° C. per minute. • Low Dead Volume—Minimum volume requirements permit analysis of high molecular weight compounds. • Low Background Noise with unique dynamic feedback network in electrometer. Versatile Lab-Crest 310 gives you complete chromatograph capability for critical research work in one compact bench-top unit—at a surpris ingly low cost. For full details, write to:
FISCHER & PORTER COMPANY SCIENTIFIC DIVISION 1556A County Line Road Warminster, Pa. 18974, Phone 215-675-6000
Lab-Crest
A Complete Line of Laboratory and Scientific Glassware · Special Glass Fabrication · Glass Process Pipe and Drainline Circle No. 210 on Readers' Service Card
VOL. 38, NO. 6, MAY 1966
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