โ Scribed by Hamilton, H.C. ;Colson, H.C. ;Pearson, W.A. ;Pittencer, Paul S.
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Owing to several unavoidable delays, the Committee was not completely organized until February of this year, and after organization the exigencies of abnormal conditions due to the war resulted in such an enormous increase in regular routine work that it was impossible for the niemhers of the Committee to attempt any researches which were not absolutely essential.
We beg, however, to submit the following report of our work to date:
The incorporation of the chapter on "Biologic Assays" in the U. S. P. IX is epochal in the history of standardization and it is to be hoped that with this start a much wider publicity and experience will be gained so that thc next Committee of Kcvision will readily be able to select from the proposed methods and make official the methods and technique which prove to be the most satisfactory and convenient for each drug.
The Committee is unanimous, however, in its opinion that the biologic assay methods of the C . S. P. I X are unsatisfactory, due to the fact that in many cases they lack the details which workers in thc practical laboratory havc found essential in order to obtain accurate results.
I n other words, the methods are in many instances not as accurate and up-to-date as the methods in common use a t the present time in the commercial laboratories.
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