ANALYTICAL
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Quaternary Ammonium Hydroxides and Iodides Purified for Polarography
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LABORATORY SERVICES * V i t a m i n assays * M i n e r a l determinations including fluorine a n d other trace elements of nutritional importance * Evaluation of unknown compounds for insecticidal, f u n g i c i d a l , a n d bactericidal properties * Phenol coefficient determinations * F o o d bacteriology * Fat a n d o i l constants * Spectrophotometric analyses Write for details
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