Manufacturers' Literature
High Purity Chemicals. Over 200 high purity inorganic chemicals from John son Matthey Chemicals, Ltd., England, are listed in a new publication. United Mineral & Chemical Corp., 129 Hud son St., New York, Ν. Υ. 10013 624 Baths. A 24-page guide to lab and in dustrial baths describes the solid state control system used in this apparatus. Also discussed are tips on constant temperature equipment and the MgGlo magnetic stirrer. Hotpack Corp., 5004 Cottman Ave., Philadelphia, Pa. 19135 625 Gc Supplies. Bulletin 84/1970, 28 pages, contains a complete listing of the company's lab gas chromatographs, columns, integrators, recorders, sup plies, and other accessories. Beckman Instruments, Inc., 2500 Harbor Blvd., Fullerton, Calif. 92634 626 Instruments. A quick reference 8-page catalog describes the company's solid state digital indicators, as well as servodigital instruments, manual multipoint indicators, and custom-tailored digital data systems. Bulletin 770. Howell Instruments, Inc., 3479 West Vickerv Blvd., Fort Worth, Texas 76107 627
Company Periodicals
Requests for copies of the following publications should be sent directly to the address shown. Business or pro fessional letterheads are requested. Gas-Chrom Newsletter. Vol. 11, No. 4, 8 pages, offers details on the follow ing new products: BCl:i-2-chloroethanol reagent for esterification ; methanolic HC1 kit; Merck tic adsorbents; Chromatosprayer; OV-61, a new sili cone phase; and an OV-phase kit. Ap plied Science Laboratories, Inc., P. O. Box 440, State College, Pa. 16801 Thermal Analysis Newsletter.
No. 9,
12 pages, features an article "When Is a DSC Not a DSC and How Does It Work Anyway?" which goes into some detail in discussing thermal analysis nomenclature and differentiating be tween the company's DSC and other differential thermal measurements. Perkin-Elmer Corp., Main St., Norwalk, Conn. 06852 Lab Reporter, Vol. 8, No. 2, 16 pages, provides information on a new atomic absorption spectrophotometer, thermal
CURTIN
analysis equipment, a gas chromatograph, and a completely automatic glassware washer. Other lab supplies are also covered. Fisher Scientific Co., 312 Fisher Bldg., Pittsburgh, Pa. 15219 Aminco Laboratory News. Vol. 26, No. 1 and 2, 20 pages, presents as a feature article a description of the Maryland State Psychiatric Research Center. Other laboratories and instruments of interest are also discussed. American Instrument Co., 8030 Georgia Ave., Silver Spring, Md. 20910 Via. Vol. 4, No. 3, 8 pages, introduces five new mass spectrometers from Varian/MAT. Information on 220-MHz nmr spectra service and a new 300-Hz nmr spectrometer is also included. Varian, 611 Hansen Way, Palo Alto, Calif. 94303 Research Notes. Vol. 10, No. 3. This 16-page issue contains detailed informa tion on the new chromatographic phase, Dexsil 300 GC, which is stable to 500°C. The chemistry of this mate rial and high temperature applications are discussed. Analabs, Inc., 80 Re public Dr., North Haven, Conn. 06473
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