Paragraph 1 Treatment of sample
On arrival at the testing laboratory the sample of milk shall at once be removed from the insulated container. Thereafter it shall be stored as follows:–
a sample taken at any time during the period from 1 May to 31 October, inclusive, in any year shall be kept at atmospheric shade temperature until 9.30 a.m. on the following day;
a sample taken at any time during the period from 1 November to 30 April, inclusive, in any year shall be kept in its original container or in a sterile sample bottle of at least 80 ml. capacity at atmospheric shade temperature until 5.00 p.m. on the day of sampling and thereafter at a constant temperature of 18.3°C.±1°C. until 9.30 a.m. on the following day.
If during the period of storage at atmospheric shade temperature to which a sample is subjected this temperature at any time exceeds 21°C., the test shall not be applied.
The test shall be begun between 9.30 and 10.00 a.m. on the day after the sample is taken.