Manufacturers' Literature
CONSECUTIVE NUMBER LABELS
TIME LABELS
Reaction rate data, 4 p, equations and techniques for converting transmittance data to reaction rate data in fast chemical reactions with logarithmic amplifiers. Durrum Instrument Corp. 625
for test tubes, ""'"-'^ , requisition forms, ^ t containers, control lots. Easy-to-use, Time® Consecutive Number Labels are self-sticking — adhere to any surface in temperatures ranging from —70°F. to + 250°F. Numbers can be repeated from 1 to 10 times on a choice of seven different color stocks. Available in handy « w r ^ i i i pre-cut tablet or clinically safe bacteriostatic roll form. Supplied with " N o " prefix or your choice of 5 standard prefixes. Economical consecutive number labels increase lab efficiency. FREE BROCHURE! Write for samples, illustrated brochure, and the name of a dealer near you. Dept. A
P R O F E S S I O N A L T A P E COMPANY, INC. 114 Tower
Drive, Burr Ridge (Hinsdale), Illinois
60521
CIRCLE 1 3 8 O N READER SERVICE CARD
Special Issue Offer 1
The July-August 1969 issue of CHEMISTRY, on scientific methods of crime investigation, is available at $1.00 J. for the first copy and 50 cents for each additional copy. Feature articles include " D i mensions of Crime T o d a y " , " O r i gin of Modern Criminology", Scientific M e t h o d s of C r i m e I n v e s t i g a t i o n " , a n d 'Chromosomes and C r i m e " . Also i n c l u d e d : the story of how the lie detector was develo p e d ; how cause of an airplane crash was deduced f r o m a single seat cushi o n ; and a comprehensive reading list on crime and scientific methods used in crime investigation. Some readers' comments: comprehensive; fun-reading; a fascinating issue; a w o r k of art in make-up and content. Send your order to: Reprint Department, American Chemical Society. 1155 16th St., N.W. Washington,
104 A
·
20036
-
Amount Enc.osed
ANALYTICAL CHEMISTRY, VOL. 4 4 , NO. 1 , J A N U A R Y
Chlorinated pesticides, procedure for thin-layer chromatography analysis on Baker-flex silica gel IB sheets. J. T. Baker Chemical Co. 626
Company Periodicals Requests for copies of the following publications should be sent directly to the address shown. Business or professional letterheads are requested. PCR Report. The first issue, 4 p, of this periodical on fine chemicals for research and industry focuses on fluorinecontaining biochemicals, nmr shift reagents, starting materials for chelate synthesis, and other chemicals useful in analysis. PCR, Inc., P.O. Box 1466, Gainesville, Fla. 32601 Scientific Instrument News, Chromatograph Series. Vol 4, No. 1, carries a 10-p article, "Ghosting Effect in Gas Chromatography," by Teiji Morii. Shimadzu Seisakusho, Ltd., 1, Nishinokyo-Kuwabaracho, Nakagyo-ku, Kyoto, Japan
SCIÉ»,,.
D C
Methods reference, 2 p, references 131 instrumental methods ranging from animal blood cell counting, ion-selective electrodes, Kjeldahl, to barbituate analysis with Fisher instrumentation. Fisher Scientific Co. 624
1972
E-C Bulletin. Vol V, No. 1, 4 p, contains articles on the determination of alkaline phosphatase isoenzymes, gel column electrophoresis, and molecularweight estimation. Company news of new products and literature is also given. Milton Roy Co., 5000 Park St., N., St. Petersburg, Fla. 33733 Molecular Sieve Abstracts. Vol 1, No. 1, 32 p, the first issue of a new quarterly, consolidates abstract information on molecular sieve technology under four headings: structure, adsorption, catalysis, and patents. Union Carbide Corp., Molecular Sieve Dept., 270 Park Ave., New York, N.Y. 10017 Carle Current Products. Vol 1, No. 2. 2 p, includes information on a new gc valve that resists severe acid conditions, valve actuators, and other products for gas chromatography. Carle Instruments, Inc., 1141 East Ash Ave., Fullerton, Calif. 92631
