KN95 Mask: 12 Things You Need to Know Before Buying ...
Dec 30, 2020·Terry Cralle. KN95 masks are created to have at least 95% filtration efficiency, which makes them just as good as the N95 masks (97% filtration efficiency) and better than surgical masks (95% filtration efficiency) and PM 2.5 filter masks (approximately 60% filtration efficiency).. Generally, these masks are considered very effective against airborne particles, viruses, and bacteria, as their ...