(a) During each six-month period, at least four (4) samples of milk and cream from each dairy farm and at least four (4) samples of milk, cream and homogenized milk from each milk plant shall be taken on separate days and examined by the health officer. In the case of raw milk for pasteurization, the health officer may accept the test results of laboratories which have checked periodically and the samples found satisfactory.
(b) Samples of other milk products should be taken and examined by the health officer at least once during the six-month period. Samples may be taken at any time prior to the final delivery of the milk or milk products. Samples of milk and milk products from stores, cafes, soda fountains, restaurants, and other places where milk or milk products are sold shall be examined as often as the health officer may require. All proprietors of such places shall furnish the health officer, upon his request, with the names of all distributors from whom their milk and milk products are obtained. Bacterial plate counts, direct microscopic counts, coliform determinations, efficiency of bactericidal treatment, and other laboratory and screening tests shall conform to the procedure in the latest edition of "Standard Methods for the Examination of Dairy Products" recommended by the American Public Health Association, current in February, 1955. Examinations may include such other chemical and physical determination as the health officer may deem necessary for the detection of adulteration.
(c) Bio-assays of the vitamin D content of vitamin D milk and milk products shall be made when required by the health officer in a laboratory approved by him for such examinations.
(d) Whenever the average bacterial count or the average cooling temperature of the last four (4) consecutive samples, taken on separate days, is beyond the limit for the grade then held, the health officer shall send written notice thereof to the person concerned and shall take an additional sample, but not before the lapse of three (3) days, for determining a new average in accordance with section 10-51(18). Violation of the grade requirements by the new average, or by any subsequent average during the remainder of the current six-month period, shall call for immediate suspension of permit and/or court action, unless the last individual result is within the grade limit.
(e) Whenever more than one (1) of the last four (4) consecutive coliform counts of samples taken on separate days are beyond the limit for the grade then held, the health officer shall send written notice thereof to the person concerned. He shall then take an additional sample, but not before the lapse of three (3) days. Immediate suspension of permit and/or court action shall be called for when the grade limit is violated by such additional samples, or when the grade limit is again violated during the remainder of the current six-month period by more than one (1) of the last four (4) consecutive samples, unless the last individual result is within the grade limit.