Standards: FFP1, FFP2 & FFP3 Protection from solid and liquid aerosol variants, CE marking. Usage: General purpose masks are suited to most industrial applications. Information: • FFP1 reduces the wearer’s exposure to airborne particles by a factor of 4. • FFP2 reduces the wearer’s exposure to airborne particles by a factor of 10. • FFP3 reduces the wearer’s exposure to airborne particles by a factor of 20.