Each warehouse under this article must be equipped with suitable scales in good order and so arranged that all agricultural products for storage can be weighed by the warehouseman. The scales in any such warehouse shall be subject to examination by representatives of the Commissioner and to disapproval by the Commissioner. If the Commissioner disapproves any weighing apparatus, it shall not thereafter be used in ascertaining the weight of agricultural products for the purposes of this article until such disapproval shall be withdrawn.