“Proof spirits” means that alcoholic liquor which contains one-half of its volume of pure ethyl alcohol of a specific gravity of 0.7939 at 60 degrees Fahrenheit, referred to water at 60 degrees Fahrenheit as unity.
Cal. Bus. & Prof. Code § 23032
General Provisions and Definitions
Known as the Alcoholic Beverage Control Act
The act spans §§ 23000–25762 (737 sections).
Added by Stats. 1953, Ch. 152.
Official source: California Legislative Information. Reproduced from public-domain California statutes; confirm against the official source for the current text. Not legal advice.