58.138—Quality testing of milk from new producers.
A quality examination and tests shall be made on the first shipment of milk from a producer shipping milk to a plant for the first time or resuming shipment to a plant after a period of non-shipment. The milk shall meet the requirements for acceptable milk, somatic cell count and drug residue level ( §§ 58.133, 58.134 and 58.135 ). The buyer shall also confirm that the producer's milk is currently not excluded from the market ( § 58.137 ). Thereafter, the milk shall be tested in accordance with the provisions in §§ 58.133, 58.134 and 58.135.