ISO 11866-2 | IDF 170-2:2005 – Milk and milk products – Enumeration of presumptive Escherichia coli – Part 2: Colony-count technique at 44 degrees C using membranes

This standard specifies a method for the enumeration of presumptive Escherichia coli by means of a colony-count technique at 44 °C. The method is applicable to milk, liquid milk products, dried milk, dried sweet whey, dried buttermilk, lactose, acid casein, lactic casein and rennet casein, caseinate and dried acid whey, cheese and processed cheese, butter, […]

ISO 3356 | IDF 63: 2009 – Milk – Determination of alkaline phosphatase

This standard specifies a method for the determination of alkaline phosphatase activity in milk. The method applies to alkaline phosphatase activities not less than 1 µg of phenol per millilitre. The method is also suitable for the determination of alkaline phosphatase activity in milk powder, buttermilk and buttermilk powder, whey and whey powder.