NIOSH testing and certificate amount
NIOSH has nine Kinds of respirators - N95, N99, N100, R95, R99, R100, P95, P99 and P100. The number indicates the proportion of particles that the respirator can filter, along with the correspondence indicates the degree of petroleum immunity (N not oil-resistant, R = moderate oil-resistant, P = powerful oil-resistant). It's rather simple to realize that P100 is the most effective respirator. Check out this ''KN95 Mask for sale''.
Whatever you decide to use, be certain you don't talk about it with anyone else. After becoming entangled, damaged or soiled, put it in a plastic bag and toss it in the garbage bin.