(a) Except as provided in subdivision (b), any sealer who seals any weight, measure, balance or weighing or measuring instrument or apparatus before first testing and making it conform with the standards of the state, or who condemns any weight, measure, balance or weighing or measuring instrument or apparatus without first testing it is guilty of a misdemeanor.
(b) A sealer may engage in a planned program of probability sampling of devices, using methods approved by the secretary. The sealing of a device by a sealer pursuant to such sampling and testing program is exempt from the provisions of subdivision (a).