Observations on the proposed grading of
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Clayson, D. H. F. ;Pirie, D. G.
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Article
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1948
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Wiley (John Wiley & Sons)
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## Abstract The tentative method proposed by the Public Health Laboratory Service of the Ministry of Health for grading ice cream according to hygienic quality by applying a methylene blue test has been given an extended trial. The test is considered unreliable because thermoduric organisms alone h