31 Pa. Stat. § 700j-402
The board may, by official order, exempt from the license requirements provided by this act milk dealers or handlers who purchase or handle milk in a total quantity not exceeding one thousand five hundred pounds in any month, and milk dealers or handlers selling milk in any quantity only in markets of a population of one thousand, or less, for local consumption. However, milk dealers or handlers exempted by this section from the license requirements of this act shall continue to be subject to all the other provisions of this act relating to milk dealers or handlers: Provided, however, That in cash sales of milk to consumers, if he shall have produced all the milk on the farm where sold and such milk has at no time left the producer's farm prior to its sale to the consumer and he shall have neither purchased, handled or received any milk from other producers or handlers for cash sale or any other purpose and his total sales to consumers do not exceed two gallons to any one consumer in any one day, the producer so selling milk shall be exempt from the provisions of this act.
31 P.S. § 700j-402