The director shall supervise the testing of milk fat and milk solids not fat, and the weighing and sampling of market milk delivered to handlers.
The director may, in order to effectuate the purposes of this article, assess all producers, producer-handlers, and handlers a fee which shall be used exclusively for the supervision and checking the corrections of the milk fat, milk solids not fat, and bacteriological tests, and the weighing and sampling of all market milk delivered to handlers in accordance with the stabilization and marketing plans established pursuant to Division 21 (commencing with Section 58001).