Metrohm for moisture measurements! fromlOppm to 100 percent

C&EN READER

Metrohm for moisture measurements! fromlOppm to 100 percent. The compact M e t r o h m E547 Karl Fischer Titrator detects water in &ases, solids or liquids at levels t is low as lOppm or as h i ^ h as 1(X)%. M e t r o h m ' s titration vessels allow addition of solids or gaseous samples w i t h o u t introducing atmospheric moisture, ,\nd the 'snap-in' buret units permit instant change I» ot reagents or solvents, I eliminating ' d o w n time! I The unique d r y i n g system utili/es Karl Fischer reagents. The 1347 performs direct c

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sî©pper Copper and copper alloys stay brighter longer when treated with Cobratec, an aromatic triazole. Example: the bright penny was dipped in 1 % Cobratec solution; both pennies were exposed for 15 minutes in accelerated test atmosphere. Cobratec provides both a mechanical and electrochemical shield that is chemically bonded to the metal. It can't wipe off or wash off. Cobratec can be used alone or in combination with other compounds for both atmospheric or solution applications. Cobratec adds protection in multimetal fluid handling systems by tying up free copper ions in solution which cause galvanic corrosion in other metals. Technical Literature! Write: The Sherwin-Williams Company Chemicals Division P.O. Box 6520 Cleveland, Ohio 44101

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c 1978 — The Sherwin-Williams Company

CHEMICALS

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