The Dairy Products (Hygiene) (Scotland) Regulations 1995

1.  Thermised milk shall—

(a) be obtained from raw milk and where thermisation of such raw milk has not commenced within 36 hours of its acceptance at the processing establishment, it shall have a plate count at 30°C prior to thermisation which does not exceed 300,000 per ml in the case of cows' milk;

(b) be obtained by the heating of raw milk for at least 15 seconds at a temperature between 57°C and 68°C such that after completion of the heating process the milk shows a positive reaction to the phosphatase test using the method of analysis specified in paragraph 2 of Schedule 11; and

(c) have a plate count at 30°C equal to or less than 100,000 per ml before heat-treatment if it is used to produce pasteurised, UHT or sterilised milk.