This European Standard specifies the classification of repiratory protective devices (RPD) according to their basic design, i.e. a general logical grouping of the RPD. This European standard is intended to serve as a basic introductory reference for users and for the preparation and revision of European Standards on respiratory protective devices.#,,#
DIN EN 133:2002 history
2002DIN EN 133:2002 Respiratory protective devices - Classification; German version EN 133:2001