Michigan Compiled Laws, Chapter 288. Dairy Industry § 288.537

Sec. 67. (1) Methods of analysis, including butterfat analysis, shall comply with the requirements of sections 6 and 7 of the pasteurized milk ordinance. Analysis required on producer, raw, and finished product samples shall comply with the pasteurized milk ordinance.

(2) The milk buyer of grade A raw milk shall be responsible for making the quality tests on the raw milk, at the producer level, that are required by law unless the director specifies otherwise. It shall be the responsibility of the bulk milk hauler/sampler to collect the samples for analysis. In situations where the producer is not represented by a milk buyer or handler that provides an approved sample analysis and reporting service, it shall be the responsibility of the producer to insure that the proper number of samples are submitted to an approved laboratory for analysis and that the results are reported to the department. In all situations, it is ultimately the producer's responsibility to insure that a minimum of 4 official sample results for the previous 6 months' production are reported to the department. The test results shall be reported to the department as requested.

(3) Methods for determining the sediment content of milk shall be those described in standard methods. Sediment content shall be based on comparison with official United States department of agriculture sediment standards, incorporated by reference.

(4) If the sediment disc is classified as no. 1, no. 2, or no. 3, the producer's milk may be accepted. If the milk contains more sediment than a no. 3, it is considered rejectable.