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Which of the following is a valid name for a test for testing membrane integrity?(a) Flux membrane test(b) Reversal of flow test(c) Air pressure hold test(d) Sediment testThe question was posed to me in examination.The query is from Membrane Filter in chapter Building Blocks of Dairy Processing of Dairy Engineering

Answer»

The correct OPTION is (c) Air pressure HOLD test

Explanation: There are 3 MAJOR tests used to determine the INTEGRITY of a membrane filter: the Bubble Point Test, the Forward Flow Test, and the Pressure Hold Test. All three tests are based on the same physics MECHANISM that the flow of a gas through a liquid-wetted membrane under applied gas pressures.



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