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Civil sanitary masks are used to filter the air entering the nose and mouth. Civil sanitary masks prevent harmful gases, odors and water droplets from entering and leaving the wearer's nose and nose. Civil hygiene masks are mainly divided into cotton masks, non-woven masks, polymer masks, activated carbon powder filter masks, and activated carbon fiber felt masks.
FFP3 masks refer to masks that meet European (CEEN1409: 2001) standards. There are three levels of European protective mask standards: FFP1 masks, FFP2 masks, and FFP3 masks. It is different from the American standard in that it uses a detection flow rate of 95 L / min and uses DOP oil to dust.