In today's world, water pollution is an ever-increasing problem. Health standards for zinc, cadmium, lead and copper in drinking water require the use o f sensitive and accurate analytical techniques. Repetitive analysis of drinking water for these and other toxic metals is normally a time-consuming process and the results obtained aren't always the most accurate. The Princeton Applied Research Model 174A Polarographic Analyzer and Model 315 Automated Electroanalysis Controller are the answer to the analyst's pollution measurement problems. The M174A is capable o f part-per-billion sensitivity, permitting accurate, simultaneous analyses of toxic heavy metals. The 174A's low cost and ease of operation make it the
The M174A/315 combination also frees you to perform your other tasks; things like sample preparation, data evaluation and report writing.
instrument of choice where pollution measurements must be performed quickly and easily. The Model 315 provides you with "hands-off" operating capability for the 174A. The 315 will automatically deaerate the sample, precondition the electrode, initiate and terminate the scan and provide you with trace analyses in triplicate. CIRCLE 175 O N READER SERVICE CARD
1074A · ANALYTICAL CHEMISTRY, VOL. 47, NO. 12, OCTOBER 1975
If you've not been able to get the accuracy or speed you need, write Princeton Applied Research Corporation, P. O. Box 2565, Princeton, New Jersey 08540, or telephone 609/4522111 and we'll provide you with the solutions to your problems. In Europe, contact Princeton Applied Research GmbH, D8034 Unterpfaffenhofen, Waldstrasse 2, West Germany. See us at the Pacific Conference—Booth
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PRINCETON APPLIED RESEARCH
