EN 149 ƙa'idar gwaji ce ta Turai da buƙatun alamomi don tace rabin abin rufe fuska.Irin wannan abin rufe fuska yana rufe hanci, baki da gaɓoɓin kuma yana iya samun inhalation da/ko bawul ɗin numfashi.Ha 149 yana nuna azuzuwan uku irin wannan barbashi rabin masks, da ake kira FFP3, (inda FFP ke tsaye don tace fafutuka) gwargwadon ƙarfinsu.Hakanan yana rarraba masks zuwa 'amfanin motsi guda ɗaya kawai' (ba za'a iya sake amfani da shi ba, alamar NR) ko 'sake amfani da shi (sama da sau ɗaya)' (alama R), kuma ƙarin harafin alama D yana nuna cewa abin rufe fuska ya wuce gwajin clogging na zaɓi ta amfani da ƙurar dolomite.Irin waɗannan na'urori masu tacewa na inji suna ba da kariya daga shakar ƙura kamar ƙura, ɗigo, da iska.
