MANUFACTURERS' LITERATURE a quality control method in production and to monitor waste effluents. Technicon Controls, Inc., Chauncey, N. Y. 622 Instruments for Physicists. 1964 edition. This 74-page catalog describes instrumentation for neutron activation analysis, for making direct readings of star magnitudes, for investigating the characteristics of colored noise, and to confirm the special theory of relativity. Atomic Laboratories, Inc., 3100 Crow Canyon Rd., San Ramon, Calif. 94583. 623 Pulse Height Analyzer. An 8-page brochure describes the Model 20631 400 channel pulse height analyzer. New concepts in this instrumentation include a versatile analog-to-digital converter, wide range of inputs, and diversification of readout devices. Radiation Counter Laboratories, Inc., 5121 West Grove St., Skokie, 111. 624
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Company Periodicals Requests for copies of the following publications, catalogs, etc., should be sent directly to the address shown. Business or professional letterheads are requested. Norelco Reporter. Vol. X, No. 4. This 30-page issue includes an article on the electron probe microanalysis of nonconducting samples. Modifications of x-ray instruments to permit their use for special analytical problems are also discussed. Other articles deal with the x-ray vacuum speetrometric analysis of light elements and various x-ray diffraction applications. Philips Electronic Instruments, Inc., 750 South Fulton Ave., Mount Vernon, N. Y.
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Atomlight. No. 34. This 12-page issue describes the preparation of radioactive chemicals for clinical use. This publication also contains a list of uniformly labeled amino acids-C 14 which are available from stock. Prices and specific activities are given. New England Nuclear Corp., 575 Albany St., Boston 18, Mass. Commentary. No. 2. This 4-page issue describes the Model 11 chromatograph-spectrograph for catching an infrared spectrum of a GC fraction "on the fly." A three-way high temperature valve is described and a progress report is given on the company's GC-IR analyzer. Wilks Scientific Corp., 140 Water St., South Norwalk, Conn. Aminco Laboratory News. Vol. 19, No. 3. This 16-page issue includes a discussion of spectroluminescence analysis and introduces the company's py-
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EASTERN
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VOL. 36, NO. 3, MARCH 1964 •
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