The Dairy Products (Hygiene) Regulations 1995

4.  The occupier shall ensure that—

(a) compliance with the standards for raw cows' milk referred to in paragraph 2(a), (b) and (c) above in relation to somatic cell count is checked by random sampling, either—

(i) on a representative sample of the raw milk collected from each production holding, or

(ii) until 1st July 1997, on acceptance of the raw milk at the treatment estblishment or processing establishment;

(b) compliance with the standards referred to in paragraph 2 above in relation to plate count and Staphylococcus aureus is checked by random sampling of a representative sample of the raw milk collected from each production holding;

(c) the plate count at 30°C is calculated on the basis of a geometric average over a period of two months, with at least two samples a month; and

(d) the somatic cell count is calculated on the basis of a geometric average over a period of three months, with at least one sample a month.