High active carbon (3 ply) N95/N99 Standard: European: EN149: FFP1, FFP2,FFP3 American: NOSH N95,N99 Austrilia: AS/NZS High active carbon (3–ply) N95/N99Standard: European: EN149: FFP1, FFP2,FFP3 American: NOSH N95,N99 Austrilia: AS/NZS 1716:1994Specification:1. Low breathing resistance with high filtration efficiency. Loaded polylene material without any toxic, irritating, stimulant, poison.2. ...