scope:

This standard specifies performance requirements, test methods and marking requirements for filtering devices designed for protection against carbon monoxide as respiratory protective devices for personal escape (in short: filter-self-rescuer). Such devices are intended for use against carbon monoxide arising from fire or explosion underground. Laboratory and practical performance test are included for the assessment of compliance with the requirements. This standard does not include requirements for training devices. However, when such devices are available care should be taken to ensure that only correct parts are fitted to the filter-self-rescuer.