Any person, firm, association, or corporation violating or failing to comply with this part or any rule, regulation, standard, or specification issued pursuant to this part shall be guilty of a misdemeanor; and each day that any violation of this part shall exist shall be deemed to be a separate offense. Whenever the Commissioner or his agents or representatives shall discover that any brake fluid is being sold or has been sold in violation of this part, the Commissioner or his agents or representatives may furnish the facts to the prosecuting attorney of the court having jurisdiction in the county in which such violation occurred; and it shall be the duty of such prosecuting attorney promptly to institute appropriate legal proceedings.