Full text full text is available as a scanned copy of the original print version get a printable copy pdf file of the complete article 139k or click on a page image below to browse page by page. What is required therefore for the routine bacteriological grading of milk is a simple inexpensive test with a small experi mental error which can be used on a large scale by relatively unskilled workers bearing these general principles in mind it is concluded that though undoubtedly of use for certain special purposes neither the sediment test the leucocyte count the titratable acidity the h ion concentration the increase in acidity the brom thymol blue test the keeping . It is the result of a comprehensive laboratory investigation on bacteriologic methods for testing and grading milk the authors were concerned chiefly with providing data for conclusions as to the relative value of current testing methods they collected considerable evidence which shows what most american workers are thoroughly cognizant of that the plate count is subject to considerable . Doi https doiorg 101016 s0140 67360136209 8
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