(a) The legal standard for the weight or measure of a commodity in this state is the standard weight or measure adopted and used by the government of the United States for that commodity. If the United States does not provide a standard weight or measure for a commodity, the standard for that commodity is that established by this subchapter.
(b) The department may adopt rules for the purpose of administering this subchapter and bringing about uniformity between the standards established under this subchapter and the standards established by federal law.

(c) Except as otherwise provided by an express contract, a contract for work or sales by weight or measure of a commodity shall be construed in accordance with the standards of this subchapter.
(d) The standards of this subchapter shall be the guide for making any adjustment of weighing or measuring devices under the law of this state.