News detection methods for more than 500 substances. Copies are available for $2.00 each from the Du Pont Compa ny's Applied Technology Division, Room 36814, Wilmington, Del. 19898.
entists, Federal, state, and local agen cies, and by industries and other groups with interests in the impact of chemical substances on the environ ment and public health.
Interex Corporation, 3 Strathmore Road, Natick, Mass. 01760 (617-2376650) has released their 1979 Safety Supplies Catalog, which contains items of interest to those companies obligated to comply with Federal, state, and local health and safety regu lations.
Melles Griot, 435 S. Pacific Street, San Marcos, Calif. 92069, has a n nounced the establishment of a Laser Products Division. T h e division will develop, build, and market heliumneon gas lasers for the OEM market segment and for the research and sci entific laboratory market.
Computer Corporation of America, 575 Technology Square, Cambridge, Mass. 02139, has been awarded a $227 000 contract by the Council on Environmental Quality of the Execu tive Office of the President. The con tract involves a study of design alter natives for a proposed Chemical Sub stances Information Network, which would include linking various chemical data bases through an on line computer system. The network would provide a method for exchang ing information needed to meet the re quirements of the Toxic Substances Control Act and related authorities. Data would be shared by research sci
Scripps Clinic and Research Founda tion, La Jolla, Calif., and Miles Labo ratories, Inc., Elkhart, Ind. 46515, have formed a joint venture company. T h e new company, to be located in San Diego, Calif., will provide clinical laboratory testing on a referral basis and prepare immunochemical materi als used by research scientists and bio chemical manufacturers. The testing services will concentrate in the areas of immunology, endocrinology, and toxicology. Beckman Instruments, Inc., Scientific Instruments Division, P.O. Box C19600, Irvine, Calif. 92713 will now sell
analog and digital pH meters, oxygen analyzers, ion-selective analyzers, electrodes, and other electrochemi cal products through two national distributors: Scientific Products and VWR Scientific, Inc. T h e products will be labeled Altex, but will be iden tical to the Beckman-labeled prod ucts, which can still be purchased through Beckman's direct sales and service organization. Bio measure, Inc., at 116 South Street, Hopkinton, Mass. 01748 (617435-6863) is providing N M R analyses for dissolvable organic and inorganic compounds. Biomeasure's 90-MHz J E O L FX 90Q Fourier transform spectrometer has broad band (multinuclear) and microsampling (capillary N M R tube) capabilities. A 35-mm slide training program on "Compressed Gases and Cryogenic Liquids" is available from the Office of Safety Training, J. T. Baker Chemi cal Co., Phillipsburg, N.J. 08865. Top ics covered include types of com pressed gas cylinders, proper han dling, storage and transport of cylin ders, hazards of cylinder usage, and precautions for use of cryogenic liquids.
Παυυ. make gas phase calibrations with llB5-traceable certainty
To get accurate, useful outputs from your gas analyzer or chromatograph, precise calibration is critical. So when you do calibrate, use the most accurate instrument available —the Metronics Dynacalibrator. It delivers accurate and precise gas concentrations ranging from 0.0001 ppm to over 1000 ppm. As a result, you can use it to get NBS-traceable calibrations of almost any instru ment—in the lab or in the field.
Further, since calibration is our only business, you get an instrument that is coldly objective and easy to use. It's also competitively priced. Yet, it has features no other calibrator can match: • Self contained design, no need for gas cylinders and related apparatus • Oven control within ±.05°C, NBS traceable • Oven temperatures variable to 50°C, 110°C optional • Flow calibrated and stable to within ± 1 % (full scale) or ± 3 % (low scale) for each reading. • Our own disposable, calibrated permeation devices, certifications traceable to NBS standards. Avail able for hundreds of gases. • All controls and indicators logically grouped on front panel for fast, error free operation • Fast, easy device change or replacement via front panel • Continuous, unattended automatic or remotely controlled operation • Dynamic gas concentration ranges of 60:1 CIRCLE 145 ON READER SERVICE CARD
9 8 2 A · ANALYTICAL CHEMISTRY, VOL. 5 1 , NO. 9, AUGUST 1979
• Optional, "in-transit" maintenance of purge and temperature It all adds up to calibrations that are above suspicion—your best protec tion against costly measurement errors. Three models meet every requirement. For detailed literature and a demonstration, call or write today. Metronics, 2991 Corvin Drive, Santa Clara, CA 95051. Phone: (408) 737-0550 Telex: 35-2129 EXPOCHEM Booths 3202 & 3204
Metronics Calibration you can count on.
