This is a booklet no chemist should miss. It's priceless.
It explains how you can do carb o n , h y d r o g e n , n i t r o g e n and oxygen determinations fully automatically. And it's free. In its pages you'll read about the most advanced system available for elemental analysis—the Perkin-Elmer Model 240 Elemental Analyzer. For instance, the Model 240 offers oxygen determination as a bonus feature. It's the only elemental analyzer that can be readily converted to oxygen analysis and then quickly returned to the normal C-H-N operating mode. Based on the proven Pregl,
Dumas and Unterzaucher methods, the instrument eliminates the time-consuming, tedious aspects of these methods so that any laboratory can now include microanalysis as a routine procedure. You don't need a special temperature, humidity or dust-controlled environment. You can use conventional sample handling and combustion techniques and any microbalance you prefer. And you don't have to work with sub-microgram samples which make accuracy c r i t i c a l l y d e p e n d e n t on weighing. You can use more substantial amounts up to 3 mg.
PEflKiN-EUftER MOOR 240 r !£M!
Circle No. 127 on Readers' Service Card 102 A
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ANALYTICAL CHEMISTRY
Precision? As good as or better than the conventional, time-consuming techniques. Here's a system so carefully designed that you can leave it to the instrument to achieve reliable results. The booklet gives you complete information, including many sample runs. Write for it. Address: Instrument Division, Perkin-Elmer Corporation, 779 Main Avenue, Norwalk, Conn. 06852—or your nearest Perkin-Elmer sales office.
PERKIN-ELMER
