Report on Recommended Specifications for Microchemical Apparatus SULFUR AND HALOGENS

Standardization of Microchemical Methods and Apparatus

“…There was an early realization that it would be necessary to standardize on certain pieces of microapparatus, and this resulted in the formation of a committee by the American Chemical Society in 1937, with G. L. Royer as chairman, to recommend standard microapparatus. Results of this committee's work, published in 1941 (5) and 1943 ( 3,4), made available the best in design of many pieces of microequipment , and there was reasonable assurance that such apparatus when purchased would conform to the recommended specifications. After this committee terminated its work, improvements were made, and before long it was realized that standardization of microchemical apparatus should be brought up to date.…”

Carius Iodometric Microdetermination of Iodine in Organic Compounds

“…Dried samples may be conveniently placed in the tubes with A.C.S. specification (15) nitric acid should be kept from contact with the acid until the tube is sealed; either the sample or the acid may be introduced into the tube in a small, thin-walled vial. In some cases aqueous solutions of organic compounds or biological preparations may be aliquoted into the tube, shell-frozen in a dry ice-acetone bath, and vacuum-dried from the frozen state (lyophilized).…”

Inorganic Microchemistry

“…Various gadgets of use around the microchemical balance were listed by Wilson (408), and the general design of microchemical laboratories has been considered by Ingram (173) and Warth (382). The report of the Committee on Specifications for Microchemical Apparatus should be noted (319).…”