Mont. Code Ann. § 81-22-206
81-22-206 Licensing of graders, weighers, and samplers
81-22-206 . Licensing of graders, weighers, and samplers. It is unlawful for a person to grade, weigh, or sample milk or cream to be used for processing into grade A milk and cream or used in manufactured dairy products without first procuring a license as a grader, weigher, and sampler from the department and passing the examination required by the department.