According to the NIOSH standard: R95 filtering efficiency for oily and non-oily particulates ≥95%, the time limit for oily particulates is 8 hours; P95 oily and non-oily particulates filtering efficiency ≥95%, no oily particulates use time limit Use 40 hours or 30 days, whichever comes earlier) N95 is the lowest level, higher than it can achieve its effect.
According to China's GB2626-2006 standard, the filtration efficiency of KP95 for oily and non-oily particulate matter is ≥95%. It can also effectively block droplets.