S.L. 449.10 Art. 5When milk is deemed to be pasteurised.

For the purpose of pasteurisation, milk is deemed to have been so treated when it has been heated -

(a) to a temperature of not less than 71.7° of the Celsius Scale (161° F) and kept at that temperature for a period of not less than fifteen seconds and thereafter cooled to a temperature of not more than 10 degrees of the Celsius Scale (50° F) immediately after heat treatment; or

(b) to a temperature of not less than 62.8° of the Celsius Scale (145° F) and kept at that temperature for a period of not less than thirty minutes, and thereafter cooled to a temperature of not more than 10° of the Celsius Scale (50° F) immediately after heat treatment and which has not been so treated more than once.