This European Standard specifies minimum requirements for power assisted respiratory protective devices which incorporate a full face mask, half mask or a quarter mask together with a particle filter. It does not cover devices designed for use in circumstances where there is or might be an oxygen deficiency (oxygen less than 17 % by volume). It also does not cover respiratory protective devices designed for escape purposes.
Laboratory tests are included for the assessment of compliance with the requirements.
SIS SS-EN 147-1991 history
1991SIS SS-EN 147-1991 Respiratory protective devices — Power assisted particle filtering devices incorporating full face masks, half masks or quarter masks — Requirements, testing and marking