California Code, Health and Safety Code - HSC § 13162

(a) It complies with regulations and standards adopted by the State Fire Marshal pursuant to Section 13160.

(b) It has been examined by and bears the label of Underwriters' Laboratories Inc. or another testing laboratory which is approved by the State Fire Marshal as qualified to test portable fire extinguishers. Any testing laboratory approved by the State Fire Marshal shall have facilities, personnel, and operating procedures equivalent to those of the Underwriters' Laboratories Inc.

(c) It does not use as an extinguishing agent any carbon tetrachloride, chlorbromomethane, or methyl bromide.

The State Fire Marshal may grant reasonable exceptions to this subdivision when the extinguisher is intended for industrial use in places to which the public is not invited or admitted. The provisions of this section apply to the state and any political subdivision thereof.