KN95 or N95 standard is near equivalent with mask standards of FFP2. This mask is KN95 or N95 rated, it is tested to filter 95% of particles that are 0.3 microns in diameter or larger. In practice it will typically filter 95% - 99%. And if a mask is FFP2 rated, it filters 94% of particles that are 0.3 microns in diameter or larger. In practice it will filter 94% - 99%. The mask does not apply to toxic or hypoxic conditions, underwater works, escape or fire fighting. GB 2626-2006 KN95
