KN95 Mask standard is one of nine protection level which edited and certificated by NIOSH(National Institute for Occupational Safety and Health) for particulate respirators. Only the respirators/mask meet N95 standard and certified by NIOSH can be called NIOSH N95 mask. “N”means used for against particulate aerosols free of oil. “95”means it filters at least 95% of the particles at aparticle size of 0.3 micron
KN95 Mask Material:
1.The first layer: PP non woven 55g/m22.The second layer: Melt blown Filterpaper 25g/m2 (filtration effiency > 95%)3.The third layer: Melt blown Filter paper25g/m2 (filtration effiency > 95%)
4.The fourth layer: PP non woven 50g/m2