Unretouched photo shows—with S/P glassware, calibration lines are never a
margin for error You can actually see one difference between S/P glassware and competitive glassware . . . t h e thickness of a calibration line. The S/P ultramicro pipette shown here was selected a t random from our complete line of microchemistry pipettes. Because it's used in procedures requiring t h e ultimate in accuracy, S / P glassware is crafted with infinite care. Such meticulous attention to "detail" is just one of the many factors which contribute to the success of this matchless labware. Clear
markings are a permanent part of the glass. Absolute precision technics in grinding and polishing of tips and tops assure you of faultless accuracy in filling and delivery. And there is an initial calibration process which is performed with instruments capable of reproducing 1/100 of one milligram which guarantees perfect readings for any test. There is something about fine glassware . . . ask your S/P Representative about it and you'll see just exactly what it is.
S/P scientific products DIVISION
OF AMERICAN H O S P I T A L SUPPLY
CORPORATION
GENERAL OFFICES: 1210 LEON PLACE, EVANSTON, ILLINOIS Regional Offices: Atlanta • Boston • Charlotte · Chicago • Columbus · Dallas • Detroit • Kansas City · Los Angeles Miami · Minneapolis • New Orleans • New York · San Francisco · Seattle · Washington Export Department — Flushing 58, L. I., New York. In Canada: Canadian Laboratory Supplies Limited. In Mexico: Hotfmann-Pinther & Bosworth, 3. A. Circle No. 94 on Readers' Service Card 70 A
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ANALYTICAL CHEMISTRY
