Except as provided in §B of this regulation, a person may not offer Grade “A” fluid milk for sale beyond the sell-by date. The following establishments may use or serve Grade “A” fluid milk up to 4 days beyond the sell-by date: Food service facilities; Hospitals; Schools; Institutions; and Places where milk is consumed on the premises. An establishment listed in §B of this regulation shall ensure that Grade “A” fluid milk is used by the establishment not later than 4 days beyond the sell-by date.