INDICATING DESICCANT changes from blue when dry to rose-red when exhausted Indicating D R I E R I T E is a chemical drying agent for the efficient and rapid drying of air and gases in systems where visual indication of active desiccant is desired. In use, the color changes sharply to a rose-red as the margin between the exhausted and active desiccant progresses through the tube or column. It is available in 8 Mesh, the standard granule size, and in 20-40, 10-20, 6 and 4 Mesh. Impregnated with cobalt chloride, Indicating D R I E R I T E retains the high efficiency of Regular D R I E R I T E , anhydrous calcium sulfate, plus the added advantage of the color change for indication. It dries air and gases to a terminal dryness of 0.005 milligram per liter of gas. Regeneration reverses the color change and makes possible repeated use after heating at 375-450°F while spread one granule deep for one hour. Regular white D R I E R I T E (non-indicating) is available in the above mentioned sizes and also in 200 Mesh. D R I E R I T E is a product of W.A. Hammond Drierite Co., Xenia, Ohio 45385.
Size: 2 V e " x 11 3 /β" Laboratory G a s and Air Drying Unit
SOLIDS LIQUIDS GASES SOLIDS LIQUIDS GASES S0110S
DRIERITE DRIERITE Available from your nearest LABORATORY SUPPLY HOUSE. CIRCLE 97 ON READER SERVICE CARD
Catalog 20 SIOCHEMICALS AND STANDARDS CHROMATOGRAPHY
PRODUCTS
ISOTOPE LABELED. CHEMICALS PILOT PLANT SERVICES REAGENTS
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CIRCLE 10 ON READER SERVICE CARD ANALYTICAL CHEMISTRY, VOL. 49, NO. 6, MAY
1977 • 525 A
