(a) Commissioner means the Commissioner of Agriculture and Markets of the State of New York.

(b) Person means any individual, firm, partnership, corporation or association.

(c) Milk dealer means any person licensed to purchase, handle or sell milk pursuant to article 21 of the Agriculture and Markets Law.

(d) Wholesale customer means a grocery store, hotel, restaurant, soda fountain, dairy products store, automatic milk vending machine, school, college, hospital, institution, nursing home, government installation or similar establishment to which packaged milk is sold or delivered other than at retail to a family unit.

(e) Milk case means a rigid multi-use container used for packing and transporting or delivering cartons, bottles, jugs or other receptacles for packaging milk and milk products, and which is made of wood, metal, plastic or other rigid materials.