Section 3. Prohibited Acts.--Notwithstanding the provisions of any other regulation or rule of law: (a) No seller shall sell to any institution any meat or poultry product which has not been inspected by the Federal Inspection Service or a municipality or the Commonwealth of Pennsylvania which has an inspection program consistent with and containing authorities comparable to such Federal Inspection Service.
(b) No person shall contract or purchase from any seller any meat or poultry product which has not been inspected as provided in section 3 for any institution.