This subchapter shall be applicable to all retailers of eggs except that retailers shall be permitted to sell eggs when the eggs are purchased directly from producers who own fewer than two hundred (200) hens, provided that the following requirements are met:
(1) The eggs are washed and clean;
(2) The eggs are prepackaged and identified as ungraded with the name and address of the producer;
(3) The used cartons are not used unless all brand markings and other identification are obliterated; and
(4) The eggs are refrigerated and maintained at a temperature of forty-five degrees Fahrenheit (45° F) or below.