Canada Occupational Health and Safety Regulations — 12.13
12.13 (1) If there is a risk of injury or disease due to exposure to an oxygen deficient atmosphere in a work place, the employer must provide every person who is granted access to the work place with respiratory protective equipment by means of which air will be supplied and that meets the following requirements: (a) it is listed in the United States National Institute for Occupational Safety and Health publication entitled Certified Equipment List , as amended from time to time; (b) it meets the requirements set out in CSA Standard Z94.4, Selection, use, and care of respirators ; and (c) it protects the respiratory tract against the oxygen deficiency. (1.1) [Repealed, SOR/2021-140, s. 1] (2) If there is a risk of injury or disease due to exposure to an airborne hazardous substance, other than a CBRN agent, in a work place, the employer must provide every person who is granted access to the work place with respiratory protective equipment that meets the following requirements: (a) if air is supplied by means of the respiratory protective equipment, it is listed in the United States National Institute for Occupational Safety and Health publication entitled Certified Equipment List , as amended from time to time; (b) if air is not supplied by means of the respiratory protective equipment, it is listed (i) in the United States National Institute for Occupational Safety and Health publication entitled Certified Equipment List , as amended from time to time, or (ii) in the CSA Group publication entitled CSA Group Product Listing , as amended from time to time; (c) for respiratory protective equipment referred to in subparagraph (b)(ii), it meets the requirements set out in CSA Standard Z94.4.1, Performance of filtering respirators ; (d) it meets the requirements set out in CSA Standard Z94.4, Selection, use, and care of respirators ; and (e) it protects the respiratory tract against the hazardous substance. (3) If there is a risk of injury or disease due to exposure to CBRN agents in a work place, the employer must provide every person who is granted access to the work place with respiratory protection equipment for protection against those CBRN agents that (a) in the case of a first responder in respect of events that may involve CBRN agents, meets the requirements set out in CSA Standard Z1610, Protection of first responders from chemical, biological, radiological, and nuclear (CBRN) events ; and (b) in any other case, (i) is listed in the United States National Institute for Occupational Safety and Health publication entitled Certified Equipment List , as amended from time to time, and meets the requirements set out in CSA Standard Z94.4, Selection, use, and care of respirators , or (ii) meets the requirements set out in CSA Standard Z1610, Protection of first responders from chemical, biological, radiological, and nuclear (CBRN) events . (4) The employer must ensure that respiratory protective equipment referred to in subsections (1) and (2) and subparagraph (3)(b)(i) is used and cared for in accordance with CSA Standard Z94.4, Selection, use, and care of respirators . SOR/88-632, s. 52(F) SOR/2019-243, s. 4 SOR/2021-140, s. 1 SOR/2022-94, s. 3