3M 9004IN Particle Respirator Mask composed of three layers of filters. The outermost layer filters out the largest dust particles, the innermost layer preserves the respirator’s shape and the middle layer is composed of electrostatic filter media. This 3M mask is used as a disposable face mask for respiratory protection against fine dust particles.
 
Features of 3M 9004IN Particle Respirator Mask:
Filtering efficiency ranging 80 percent when tested against 0.3-micron sodium chloride particle
Can be folded when not in use and slipped easily into the pocket
AS/NZ approval, P1 class of filtering efficiency, CLI tested