Abstract
THE Minister of Health has issued a pamphlet giving directions for carrying out tests to ascertain whether milks entitled to be called ‘tuberculin tested’, ‘accredited’ or ‘pasteurized’ comply with the prescribed standards for the bacterial content of such milks. These standards indicate the cleanliness and keeping qualities of the milk (Bacteriological Tests for Graded Milk (Revised Memorandum 139/Foods. London: H.M. Stationery Office. 3d.). Since June 1, ‘tuberculin tested’ milk has taken the place of ‘certified’ and ‘Grade A (Tuberculin Tested)’ milks; and ‘Accredited Milk’ that of ‘Grade A’ milk. In place of the previous ‘plate-count’ test, a new test, the methylene blue reduction test, will be applicable—to these milks from January 1, and as before, there is a test for the presence of coliform bacilli. Pasteurized milk, whether ‘tuberculin tested’ milk or not, must comply with a ‘plate-count’ test. Full directions are given for carrying out these tests, and the pamphlet also explains how samples should be collected.
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New Tests for Milk. Nature 138, 1050 (1936). https://doi.org/10.1038/1381050a0
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DOI: https://doi.org/10.1038/1381050a0