ISO 3356:1975
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
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Milk and dried milk, buttermilk and buttermilk powder, whey and whey powder — Determination of phosphatase activity (Reference method)
Hardcopy , PDF , PDF 3 Users , PDF 5 Users , PDF 9 Users
12-04-2019
English, French
01-07-1975
Important note : Users cannot be edited or removed once added to your Multi user PDF.
Can be applied for the control of proper pasteurization of the products specified in the title of this standard. Uses a principle of determination based on the dilution of the liquid product or the reconstituted liquid product with a buffer at pH 10.6 containing disodium phenylphosphate and incubation at 37 degrees centigrade for 1 h. By reaction with the alkaline phosphatase present in the product phenol is liberated which reacts with dibromopquinonechloroimide. Then the colour formed is measured photometrically.
| DocumentType |
Standard
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| Pages |
3
|
| PublisherName |
International Organization for Standardization
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| Status |
Withdrawn
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| SupersededBy |
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