FFP1 ihe nkpuchi
Ihe mkpuchi FFP1 bụ ihe nzacha kacha nta nke atọ.
Pasent nzacha ikuku: 80% kacha nta
Ọnụego ntapu nke ime: kacha 22%
A na-ejikarị ya dị ka ihe mkpuchi uzuzu (dịka ọmụmaatụ maka ọrụ DIY).Uzuzu nwere ike ịkpata ọrịa ngụgụ, dị ka silicosis, anthracosis, siderosis na asbestosis (karịsịa uzuzu sitere na silica, coal, iron ore, zinc, aluminum ma ọ bụ ciment bụ ihe egwu nkịtị).
FFP2 nkpuchi
Ihe mkpuchi ihu FFP2 nwere ma na-enweghị valvụ iku ume
Pasent nzacha aerosol: 94% kacha nta
Ọnụego ntapu nke ime: kacha 8%
Ihe mkpuchi a na-enye nchebe na mpaghara dị iche iche dị ka ụlọ ọrụ iko, ebe a na-emepụta ihe, ihe owuwu, ụlọ ọrụ ọgwụ na ọrụ ugbo.Ọ na-akwụsị kemịkalụ powdered nke ọma.Ihe nkpuchi a nwekwara ike bụrụ ihe nchebe megide nje na-eku ume dị ka influenza avian ma ọ bụ nnukwu ọrịa iku ume nke metụtara coronavirus (SARS), yana megide nje bacteria nke ọrịa oyi baa na ụkwara nta.Ọ dị ka igwe iku ume N95 nke US.
FFP3 nkpuchi
Ihe mkpuchi ihu FFP3
Pasent aerosol filtration: 99% kacha nta
Ọnụego ntapu nke ime: kacha 2%
Ihe mkpuchi FFP3 bụ ihe nzacha kachasị nke ihe mkpuchi FFP.Ọ na-echebe megide ezigbo ahụ dị ka asbestos na seramiiki.Ọ naghị echebe megide gas na karịsịa oxides nke nitrogen.