(a) A candler certificate signifying that all eggs contained in the case have been candled shall be placed in each full case, thirty (30) dozen to the case, or portion of a case, of candled eggs.
(b) The certificate shall show the packer or distributor's name, address, license number and date of candling.
(c) The candling certificate shall be two inches by four inches (2″ x 4″) in size with printed wording and quality of paper stock used to be as required by the commissioner.