KN95 Respirators are designed to reduce the wearer's exposure to airborne particles, whereas the primary purpose of a surgical mask is to prevent biological particles (bacteria and viruses) that are expelled by the wearer into the enviroment.
The qualities of the KN95 Respiratory Masks include:
1. 95% protection filter efficiency against viruses and bacteria which is 0.3 micron's in size.
2. They hug the face of the wearer, allowing little air from sneaking around the sides, unlike certain face masks;
3. They help protect against microbial liquid droplets expelled into the air.
4. They have an adjustable nose piece, designed to hug the bridge of your nose as per the wearer's required comforts.
The following are equivalent in compliance with the standard filter efficiency tests:
FFP2 - European
KN95 - Chinese
N95 - United States