Smoke Screen
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WhY is FLORISILTLC used to screen out and characterize poiYCYclic hYdrocarbons in polluted air? According to published procedure utilizing thin layer chromatography, FLORISIL TLC proves more durable, provides more even films and has superior separation characteristics and greater accuracy when compared to aluminum oxide, cellulose and cellulose acetate. Versatile FLORISIL TLC is one of a family of highly selective adsorbents
which are used regularly by government agencies, leading universities, hospitals, and prominent manufacturers for a wide variety of chromatographic procedures. In the exacting new discipline of thin layer chromatography, FLORISILTLC is an indispensible tool. Send for a sample direct from Floridin or through Fisher Scientific or Wilshire Chemical Co., Gardena, Calif. Circle No. 30 on Readers' Service Card
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FULLERS EARTH · ATTAPULGITE CLAY · ACTIVATED BAUXITE
Shipping Points: Quincy. Fla. & Ochlocknee, Ga. Sales Offices: 375 Park Avenue, New York, N.Y. 3 Penn Center. Pittsburgh. Pennsylvania 3390 Peachtree Road, Atlanta. Georgia 8000 Bonhomme Avenue. St. Louis, Missouri 1 0601 W. Crestridge Drive, Minnetonka, Minn. 5645 Milton Street. Dallas. Texas.
