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A method of measuring milk soil remaining after cleaning and disinfection


, : A method of measuring milk soil remaining after cleaning and disinfection. Kieler Milchwirtschaftliche Forschungsberichte 34(1): 63-67

Soil is recovered by circulation of 1% caustic solution + 300 p.p.m. available Cl- at initial temp. of 70 deg C for 10 min. Samples of recovery solution, taken before and after circulation, are neutralized to pH 7, and treated with hydrated zinc sulphate to precipitate the fat and protein. The precipitate formed during 1 h is washed and filtered and tested for COD. About 50% of the COD is recovered when Cl- is present.

US$29.90


Other references

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