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Yours Free. You want information fast. Matheson's new Specialty Gas Catalog makes it easier and faster to find what you need. Catalog 81 is 224 pages packed with information on gases and gas handling equipment. It features special sections on calibration gas mixtures, instrumentation gases and semiconductor materials for manufacturing. Catalog 81 boasts the most complete selection of compressed gases
available from one source. A variety of cylinder sizes and purities is available. Many new equipment items are included in the sections on pressure regulators, flowmeters, purifiers and other gas handling equipment. Finally, there are explanatory guides to simplify ordering. At Matheson, we like to keep you up to date. Just write for. your copy, and it's yours. Free.
atheson
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Lyndhurst, N.J. 07071 CIRCLE 138 ON READER SERVICE CARD
ANALYTICAL CHEMISTRY, VOL. 5 3 , NO. 2, FEBRUARY
1981 ·
111 A
