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.