Cal. Health & Saf. Code § 110525
The department may, by regulation, establish definitions and standards of identity and quality for wine. Such definitions and standards may incorporate in whole or in part, the regulations adopted by the Secretary of the Treasury pursuant to the Federal Alcohol Administration Act, pertaining to the standards of identity and quality for wine. Standards of identity and quality for wine adopted pursuant to this section may differ from or be inconsistent with the standards promulgated by the Secretary of the Treasury pursuant to the Federal Alcohol Administration Act. No standard of size, type, or fill of container for any wine subject to the provisions of the Alcoholic Beverage Control Act, Division 9 (commencing with Section 23000) of the Business and Professions Code, shall be adopted, but containers of wine sold in this state shall conform to the then current standards for the containers, including standards of fill, established by the Secretary of the Treasury pursuant to the Federal Alcohol Administration Act.
Ca. Health and Saf. Code § 110525