Drinking milk shall: (a) have a freezing point close to the average freezing point for raw milk recorded in the area of origin of the drinking milk collected; ...
Method to determine the freezing temperature
The sample is placed in a special test tube and placed in an apparatus for the determination of the freezing temperature. The sample is stirred gently and continuously during cooling and the temperature is measured at suitable intervals. As soon as the temperature remains constant for a few readings this temperature (corrected for thermometer error) is recorded as the freezing temperature.
