For purposes of this subpart, the following shall be herein defined:
(1) Commissioner: The commissioner of agriculture, his representative or his agent.
(2) Cooperative: A legally chartered organization of milk producers, their representatives or their agents.
(3) Purchaser: Any person, firm, corporation or cooperative purchasing milk and cream on the basis of volume, weight and butterfat content therein.
(4) Producer: Any person, firm, corporation or cooperative producing milk for sale on the basis of volume, weight and butterfat content therein.
(5) Milk: As defined by the state health sanitary code, the butterfat requirement shall be excluded as related to milk produced at dairy farms.
(6) Fresh milk test: A butterfat analysis which shall have been determined by a method approved by law and which shall have been proven accurate and deemed acceptable as a factor of payment by the commissioner.
(7) Time composite: A sample of milk obtained by the mixing of single samples, each being representative of and proportionate to the volume from which they were taken and which shall represent a period of time not to exceed sixteen days.
(8) License: Any technical license issued by the commissioner.