(1) When 12 days or more have passed following pasteurization of a unit of grade A milk, there will be no quantities of that unit of milk sold as packaged except as provided in (a).
(a) Half pint packages of Grade A milk may be further distributed within an institution after the 12 days has passed, provided the initial purchase occurred pursuant to (1) above. For the purposes of this subsection, an institution means a school, hospital, or similar entity.
(2) No grade A pasteurized milk may be put in any container marked with a sell-by date which is more than 12 days after pasteurization of the milk for sale in Montana.
(3) Unless otherwise agreed upon, the person who offers the milk for sale to the public is responsible for removing the milk at or before the expiration of the 12 days.