S-2.1, r. 13 - Regulation respecting occupational health and safety
37. Operating conditions: Portable fire extinguishers shall:
(1) be approved by Underwriters’ Laboratories of Canada (ULC);
(2) provide protection according to the nature of the hazard;
(3) be filled after use;
(4) bear the name of the person entrusted therewith and the date of the last inspection.