(N95 respirator)"N" means not resistant to oil, suitable for non oily particles.
(N95 respirator)"R" means resistant to oil, which is suitable for oily or non oily particles. If it is used for the protection of oily particles, the service time shall not exceed 8 hours.
(N95 respirator)"P" means oil proof, suitable for oily or non oily particles. If used for oily particles, the service time shall follow the manufacturer's recommendations.
"95", "99" and "100" refer to the filtration efficiency level when tested with 0.3 micron particles. "95" means that the filtration efficiency is more than 95%, "99" means that the filtration efficiency is more than 99%, and "100" means that the filtration efficiency is more than 99.97%.
