A. No person shall engage in measuring, weighing, sampling, transporting or testing producer milk, or cream as a basis of payment unless he has first procured a license from the commissioner.
B. No person shall calibrate, adjust or otherwise supervise the operation of any electronic fat analysis device unless he has first procured a milk and cream testers license and special authorization or license from the commissioner.
C. No person shall own and/or operate a bulk tank transport for milk hauling purposes without having first procured a license from the commissioner. Such persons shall be held coresponsible and coliable with licensed personnel in their employ when such business shall effect payment to producers.
D. The commissioner may require application for license on a form prescribed and furnished by him. The applicant shall submit to written or practical examination or both by the commissioner, and upon passing the examination and approval by the commissioner as to the applicant's integrity, the applicant shall receive the license for which he applied. Renewal of licenses shall be effected on June 30 of every other year.