PREPARATION OF PRODUCT IN OFFICIAL ESTABLISHMENTS

All processes used in curing, pickling, rendering, canning, or otherwise preparing any product in official establishments shall be supervised by a department employee. No fixtures or appliances, such as tables, trucks, trays, tanks, vats, machines, implements, cans, or containers of any kind, shall be used unless they are of such materials and construction as will not contaminate the product and are clean and sanitary. All steps in the processes of manufacture shall be conducted carefully and with strict cleanliness in rooms or compartments separate from those used for inedible products.