It is unlawful for any person to sell or use any milk bottle caps which are not packed by the manufacturer in single column in unopened, dustproof tubular packages.
Cal. Food & Agric. Code § 36033
Bottle Caps and Labels
Known as the Milk and Milk Products Act
The act spans §§ 32501–39912 (683 sections).
Enacted by Stats. 1967, Ch. 15.
Official source: California Legislative Information. Reproduced from public-domain California statutes; confirm against the official source for the current text. Not legal advice.