Section 153A. Whoever himself or by his agent sells or offers for sale any meat or meat product to which has been added any sulphur dioxide or compound thereof, except beef sausage made of fresh beef and enclosed in casings, which contains sulphur dioxide or compound thereof not in excess of 1–10 of 1%, when calculated as anhydrous sodium sulphite, if contained in a package which has conspicuously labelled on the outside thereof in not less than eight point type the following:—”contains not more than 1–10 of 1% sodium sulphite,” shall be punished by a fine of not less than fifteen nor more than one hundred dollars.