Other levels of NIOSH certified anti particulate respirators include: N95, n99, N100, R95, R99, R100, p95, p99 and P100, a total of 9 kinds. These protection levels can cover the protection range of N95.

“ N” Indicates that it is not resistant to oil and is suitable for non oily particles.

“ R” Indicates resistant to oil, suitable for oily or non oily particles.

“ P” Indicates oil proof, suitable for oily or non oily particles.

“ 95”、& ldquo; 99” And & ldquo; 100” Refers to the filtration efficiency level when tested with 0.3 micron particles& ldquo; 95” Indicates that the filtration efficiency is above 95%, & ldquo; 99” Indicates that the filtration efficiency is above 99%, & ldquo; 100” It means that the filtration efficiency is more than 99.7%.