Report on Recommended Specifications for Microchemical Apparatus Carbon-Hydrogen and Dumas Nitrogen G. L. ROYER, CHAIRMAN, H. K. ALBER, L. T. HALLETT, W. F. SPIKES,
A SOCIETY
T THE Rochester meeting of the AMERICAN CHEMICAL in September, 1937, a committee for the standardization of microchemical apparatus was appointed by W. R. Kirner, who was then chairman of the Division of Micro Chemistry. The purpose of this committee was to investigate the wide variation in dimensions of various common pieces of apparatus which are employed in organic microanalysis and to suggest to the division recommended specifications of such apparatus in so far as it seems practical to do so.
Microchemistry has now progressed to such a point that standardization of apparatus for the common analytical procedures is both desirable and possible. The use of recommended apparatus should contribute to the progress of microchemistry. The microanalyst, particularly a beginner in the field, relies to a great degree on correctly dimensioned apparatus for the success of his results. It is a well-established fact that failures in microanalytical procedure have occurred because of insufficient consideration for even small changes in design and dimensions. Individual pieces of apparatus must be not only properly constructed in themselves but capable of being connected to each other to form a satisfactory assembly.
AND
J. A. KUCK, SECRETARY
Apparatus made according to recommended specifications will also be desirable from the manufacturer’s point of view. It will make possible simplification of the types of units which are kept in stock, with a resulting economy for the consumer. It will assist the manufacturer in constructing correctly designed equipment for this new and highly specialized field. Until recently, much of the microchemical apparatus in use in America was imported from foreign countries where microchemistry had an earlier start. The necessity for importation was partly due to a lack of information on the part of the American manufacturers. It is hoped that these recommended specifications will enable American microanalysts to obtain domestically manufactured equipment and replacement items suitable for use, which a t present cannot be imported. I n developing these recommended specifications, consideration was given to the type of unit now in general use, cost, simplicity of construction, durability, and efficiency in service. It was not the idea of the committee to set up apparatus as “standard apparatus” which could not be changed or varied in carrying out a determination, but to set up recommended specifications for each unit of assembly. It is hoped that improvements will continue to be made in the procedures and apparatus and that new ideas, after publication of separate papers, may again be considered by the committee and a t some future time be presented as revised specifications. Preliminary mimeographed reports along with drawings were presented t o the members of the Division of Micro
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August 15, 1941
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Vol. 13, No. 8
INDUSTRIAL AND ENGINEERING CHEMISTRY
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August 15, 1941
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