The Dräger X-plore Pure P100 particle filters protect you against oil and solid particulates. According to the NIOSH 42 CFR 84 standard the protection class P100 filters out 99.97 % of the particles from the ambient air. The filters are oil-proof (marking "P"), so can be reused in atmospheres containing oil. Typical applications are sweeping, grinding, sanding, cutting, mixing, drilling, cleaning, demolition etc. The particle filters are only allowed to be used in conjunction with the Dräger X-plore 3300 or 3500 Half-Face Respirator Masks or the Dräger X-plore 5500 Full-Face Respirator Mask. As it´s a twin-filter system you need 2 filters during use. The cartridges are positioned at the side of the mask which allows an excellent field of vision. They are inserted from above and guided down to the connection point - incorrect assembly is all but impossible.