Gas M i x t u r e Capability Matheson is the world's most experienced supplier of gas mixtures. Our capability includes gas chromatog raphy calibration mixtures, air pollution calibration mix tures, doping gas mixtures and many more. In the case of gas mixtures, capability also means accuracy. Our best are the Matheson Primary Standards. Prepared by weight, accuracies of ±0.02% absolute at concentrations above 2%. Send for Matheson's new booklet. "Your Guide to Gas Mixtures!' Gas Control E q u i p m e n t Capability Because we know more about gases, we know more about controlling them. This capability is made up of an extensive line of specially designed regulators, flow meters, valves, manifolds, gauges and other accessories. There's a section on this equipment in Matheson's new Catalog 27. Write for it.
Capability for t h e Electronics Industry The advantages of gas phase processing are easily achieved using Matheson's capability in gas technology. This includes both gases and special gas control systems to meet the exacting needs of the semiconductor indus try. Send for our new catalog, "Gases and Systems for the Electronics Industry!' S o d i u m C o m p o u n d Synthesis Capability In this specialized field, The Gray Chemical Division of Matheson is the name to remember. Specialized research, development, packaging and custom synthesis of sodium compounds, alkoxides and metallic hydrides make up this capability. Send for descriptive brochure containing details. ASK
Purified Gases Capability In this area, Matheson has full spectrum capabilitygases in stock from Acetylene to Xenon including re search grade, special carrier and zero gases. Available in five cylinder sizes. Prompt shipment from eight plants. Write for Matheson Catalog 27.
MATHESON
. . Y O U ' R E IN CAPABLE
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MATHESON GAS PRODUCTS P. O. B o x 8 5 , East R u t h e r f o r d , N. J . 0 7 0 7 3 NAME
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A D i v i s i o n o f W i l l R o s s Inc. East R u t h e r f o r d , N. J . ; C u c a m o n g a , Calif.; G l o u c e s t e r , Mass.; J o l i e t , III.; L a P o r t e . Texas; M o r r o w . Ga.; N e w a r k , Calif.; M a t h e s o n of C a n a d a , L t d . , W h i t b y , O n t .
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STATE Please rush me D Catalog 27 Π Gases and Systems for the Electronics Industry
I ZIP Π Your Guide to Gas Mixtures D Gray Chemical Brochure
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1 Circle No. 67 an Readers' Service Card
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ANALYTICAL CHEMISTRY, VOL. 42, NO. 3, MARCH 1970
