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Reading the Fat in Cream Tests

Purdue University Agricultural Experiment Station, Department of Dairy Husbandry, Lafayette, Indiana

ABSTRACT

Owing to the recent criticisms and misunderstanding concerning the manner of reading the test in the Babcock method for cream testing, we deemed it advisable to give a brief review and offer some additional data. It is not our intention to propose any modifications, but rather to substantiate and verify the accuracy of cream testing as compared with the official Roes-Gottlieb method for fat determinations.

The question of inconsistant results obtained by the Babcock method for cream testing when compared with the gravimetric method, has been the cause of numerous publications proposing modifications which should give most concordant results.

In 1903-1904, Ed. H. Webster, Bureau of Animal Industry, Bulletin No. 58, made a study of the testing of cream. The subject matter of this investigation which concerns this article, is his work and results on the value or per cent of butter fat included in the meniscus in cream testing.