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ANALYTICAL
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CHEMISTRY
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In the Merck Analytical
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Laboratories,
even the most modern instruments of science are simply routine tools for everyday procedures. Take, for example, the spectrochemical analysis of sample lots, accomplished through a highly advanced type of spectrograph which speedily registers the tiniest traces of impurities, some
times in parts per billion. The gigantic, roomsized instrument also permits complete analysis of many unknown compounds within a few hours. Spectrographs analysis at Merck is part of one of the most modern quality-control systems in existence. These thoroughly perfected meth ods assure an unsurpassed degree of uniform purity. They explain why so many chemists specify MERCK LABORATORY CHEMICALS on every order.
MERCK LABORATORY CHEMICALS MERCΚ & CO., Inc. Manufacturing Chemists RAHWAY, N. J.
M Ε MERCK C Κ
New York, N. Y. · Philadelphia, Pa. - St. Louis, Mo. · Chicago, 111. · Elkton, Va. · Los Angeles, Calif. IN CANADA: Merck & Co., Ltd. Montreal · Toronto · Valleyfield
