(a) Each person who desires to have his laboratory approved by the commissioner for testing official frozen dessert or imitation frozen dessert samples as provided in this section shall first satisfy the commissioner that tests to be made in such laboratory shall be conducted by qualified persons with adequate facilities and that such tests shall be performed accurately and according to approved methods.
(b) For the purpose of determining whether or not a laboratory shall be designated as an approved laboratory the commissioner shall designate a qualified person or persons to inspect the laboratory, its equipment, facilities and personnel at the expense of the applying laboratory, and thereafter may have similar inspections made at the expense of the applying laboratory for the purpose of determining whether or not such approval should be continued.
(c) The commissioner may accept the test results of any laboratory that has been approved under this article: Provided, That the commissioner shall not accept the test results of any approved laboratory for samples manufactured, distributed or used by a firm related to or owned by the approved laboratory.