I-EN 149 ngumgangatho waseYurophu wovavanyo kunye neemfuno zokumakisha zokucoca imaski enesiqingatha. Ezo maski zigquma impumlo, umlomo kunye nesilevu kwaye zinokuphefumla kunye/okanye neevalvu zokuphefumla. I-EN 149 ichaza iiklasi ezintathu zeemaski zesiqingatha sesuntswana, ezibizwa ngokuba yi-FFP1, i-FFP2 kunye ne-FFP3, (apho i-FFP imele ukucoca ubuso) ngokusefa kwayo. Ikwahlela iimaski zibe 'zisetyenziswa kwishifti enye kuphela' (ezingasebenzisekiyo kwakhona, iphawulwe i-NR) okanye 'inokusetyenziswa kwakhona (iishifti engaphezulu kwesinye)' (ephawulwe R), kunye nonobumba owongezelelweyo wokuphawula ongu-D ubonisa ukuba isigqubuthelo sobuso siphumelele uvavanyo lokuvala olukhethekileyo kusetyenziswa uthuli lwedolomite. Ezo ziphefumli zokucoca ezisebenza ngoomatshini zikhusela ekuphefumlweni kwamalungu anje ngamasuntswana othuli, amathontsi kunye ne-aerosols.
