SERVICES CLARK MICROANALYTICAL LABORATORY C H , N , S, Halogen, Fluorine, Oxygen, A l k o x y l , Alklmlde A c e t y l , Terminal M e t h y l , etc, by ipecialiits in organic microchemical analysit. H o w a r d S. Clark, Director P. O. Box 17. Urb«n», III.—Telephone EMpire 7-8406
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LABORATORY SERVICES F Applied Research and Development, Testi n g and Consultation · Food, Feed, Drug land Chemical Analyses, Animal Studies, /Pesticide Screening, Pesticide and Addiftive Residue Analyses
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A M I N O ACID ANALYSIS . . . of proteins, peptides, tissue extracts, foods, and physiological fluids by the Spackman, Moore, Stein ion-exchange method, using the latest Beckman· Spinco Analyzer. Inquiries for rates and other details are invited Analytical Division
