(a) The secretary shall supervise the weighing, measuring, sampling, bacteriological testing, and sanitary loading and unloading of bulk milk delivered to handlers.
(b) Notwithstanding any other provision of this division, the secretary may, in order to effectuate the purposes of this article, assess all producers, producer-handlers, and handlers a fee which shall be used for the supervision of, and checking the corrections of, bacteriological tests, and the weighing, measuring, sampling, and sanitary loading and unloading of all bulk milk delivered to handlers.