81-22-302. Taking and preservation of samples. (1) A person purchasing or sampling milk or cream for manufacture, sale, or shipment and paying for the milk or cream on the basis of the butterfat, protein, solids, or other compound components contained in the milk or cream as determined by official test, when receiving the milk or cream, shall take a sample of the milk or cream.

(2) All samples taken shall be plainly marked or labeled on the records of the purchaser or sampler to correspond with the name of the person from whom the purchase was made or sample obtained. The record of purchase shall also show the weight of the milk or cream, the results of the analysis, the date of sampling, and the amount paid. All milk and cream samples on which payment for butterfat, protein, solids, or other components is based shall be kept and suitably preserved by the purchaser for a minimum of 14 days following testing in the case of milk and for at least 2 days in the case of cream. These samples are subject to retest by the department.

(3) This section does not prohibit the weighing or measuring of milk in and sampling of milk from farm bulk milk tanks or the use of composite or single samples of milk according to rules adopted by the department or the test procedures prescribed in this chapter.