(3) Sediment content classification - Milk shall be classified for sediment content, regardless of the results of the appearance and odor examination described in Section (2) as follows: The USDA Sediment Standard
No. 1 (acceptable) - not to exceed 0.50 mg. or equivalent.
No. 2 (acceptable) - not to exceed 1.50 mg. or equivalent.
No. 3 (probational, not over 10 days) - not to exceed 2.50 mg. or equivalent.
No. 4 (reject) - over 2.50 mg. or equivalent.
(a) Method of testing - Methods for determining the sediment content of the milk of individual producers shall be those described in the latest edition of Standard Methods for the Examination of Dairy Products. Sediment content shall be based on comparison with applicable charts of the United States Sediment Standards for Milk and Milk Products, 7 CFR Part 58, Subpart T, §§ 58.2728 through 58.2732.(b) Frequency of tests - At least once each month, at irregular intervals, the milk from each producer shall be tested as follows: 1. Milk in cans - One or more cans of milk selected at random from each producer.2. Milk in farm bulk tanks, - A sample shall be taken from each farm bulk tank.(c) Acceptance or rejection of milk if the sediment disc is classified as No. 1, No. 2 or No. 3, the producer's milk may be accepted. If the sediment disc is classified No. 4 the milk shall be rejected: Provided, that if the shipment of milk is commingled with other milk in a transport tank the next shipment shall not be accepted until its quality has been determined at the farm before being picked up; however, if the person making the test is unable to get to the farm before the next shipment it may be accepted but no further shipments shall be accepted unless the milk meets the requirements of No. 3 or better. In the case of milk classified as No. 3 or No. 4, if in cans, all cans shall be tested. Producers of No. 3 or No. 4 milk (cans or bulk) shall be notified immediately and shall be furnished applicable sediment discs and the next shipment shall be tested.(d) Retests - On test of the next shipment (if in cans, all cans shall be tested) milk classified as No. 1, No. 2, or No. 3, may be accepted but No. 4 milk shall be rejected. Retests of bulk milk classified as No. 4 shall be made at the farm before pickup. The producers of No. 3 or No. 4 milk shall be notified immediately, furnished applicable sediment discs and the next shipment tested. This procedure of retesting successive shipments and accepting probational (No. 3) milk and rejecting No. 4 milk may be continued for not to exceed 10 calendar days. If at the end of this time all of the producer's milk does not meet the acceptable sediment content classification (No. 1 or No. 2) it shall be excluded from market.(4) Bacterial estimate classification - Milk shall be classified for bacterial estimate by one of the following methods: --------------------------------------------------------------
Bacterial Estimate Direct Microscopic Count, Standard
Classification Plate Count or Plate Loop Count
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No. 1 ---------------- Not over 500,000 per ml.
No. 2 ---------------- Not over 1,000,000 per ml.
Undergrade ----------- Over 1,000,000 per ml.
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(a) Method of testing - Methods for determining the bacterial estimate of milk shall be those described in the latest edition of Standard Methods for the Examination of Dairy Products.(b) Frequency of tests - At least once a month at irregular intervals, a mixed sample of each producer's milk shall be tested.(c) Acceptance of milk - If the sample of milk is classified as No. 1 or No. 2, the producer's milk may be accepted without qualification. If the sample is classified as "Undergrade" (probational), the producer's milk may be accepted for a temporary period of 4 weeks. The producer of "Undergrade" milk shall be notified immediately.(d) Retests - Additional samples shall be tested and classified at least weekly and the producer notified immediately of the results. This procedure of testing at least weekly and accepting "Undergrade" milk may be continued for a time period not exceeding 4 weeks. If at the end of this time the producer's milk does not meet the acceptable bacterial estimate requirements (No. 1 or No. 2), it shall be excluded from market.