EN 149 chiyero cheEuropean chekuyedza uye kumaka zvinodiwa pakusefa hafu yemasiki. Masks akadaro anovhara mhino, muromo uye chirebvu uye anogona kunge aine inhalation uye/kana mavharuvhu ekufema. EN 149 inotsanangura makirasi matatu eakadai hafu yemasiki, anonzi FFP1, FFP2 uye FFP3, (apo FFP inomiririra kusefa kumeso) zvichienderana nekusefa kwavo. Inoisawo masiki kuita 'imwe shift kushandiswa chete' (isingashandiswe zvakare, yakamaka NR) kana 'inogona kushandiswazve (inodarika imwe shift)' (yakanyorwa R), uye imwe yekuwedzera yekumaka vara D inoratidza kuti mask yakapfuura sarudzo yekuvhara bvunzo uchishandisa guruva re dolomite. Ma mechanical filter respirators anodzivirira kubva pakufemerwa kwezvinhu zvakaita seguruva zvidimbu, madonhwe, uye aerosols.
