Montana Title 30. Trade and Commerce § 30-12-301. Method of sale of commodities--general

(1) Commodities in liquid form may be sold only by liquid measure or by weight, and, except as otherwise provided in parts 1 through 5, commodities not in liquid form may be sold only by weight, by measure of length or area, or by count. Liquid commodities may be sold by weight and commodities not in liquid form may be sold by count only if those methods give accurate information as to the quantity of commodity sold. This section does not apply to:

(2) The department may adopt reasonable rules necessary to ensure that amounts of commodity sold are determined in accordance with good commercial practice and are determined and represented as to be accurate and informative to all parties at interest.