FFP2/N95 face masks have a minimum of 94% filtration percentage and maximum 8% leakage to the inside. They are mainly used in construction, agriculture, and by healthcare professionals against influenza viruses. They are currently used for protection against the coronavirus.
FFP2 vs N95 vs KN95
All respirator masks are graded based on how much protection they offer. Each country has a different grading system for the equivalent masks. FFP2 is the UK/EU version, N95 is the US version and KN95 is the version used in China.
All these masks offer the same level of protection and they protect against materials at concentrations up to 12x OEL or 10x APF (assigned protection factor).
Are the respirator masks re-usable?
These masks are not marketed as re-usable masks because respirator dust masks are usually intended for use in a construction environment.
However, the OSHA (Occupational Safety and Health Administration) directive indicates that a respirator can be reused as long as it “maintains its structural and functional integrity and the filter material is not physically damaged or soiled”.