(a) Every cooperative or other purchaser shall notify the producer of the results of any test and the basis of payment. The cooperative or other purchaser shall maintain records of the tests and payment in a manner specified by the Secretary.
(b) Every hauler, upon receipt of milk or other fluid dairy products, shall provide immediately the producer with a written statement indicating the correct quantity received. He shall provide also the cooperative or other purchaser with a written quantity statement upon delivering the milk or other fluid dairy products. The statement provided to the producer and the cooperative or other purchaser shall contain other information as specified by the Secretary.