3M 2138 P3 Organic-Ozone Gas/Vapor Filter Features: The 2138 Particle Filters provide protection for solid and liquid particles and against organic and acid gases as well as ozone up to 10 times the TLV. The filter is also suitable for protection against organic vapors and acid gases below OEL. Compatible with 3M™ 6000 and 3M™ 7000 Series Half and Full Facepieces. Typical industrial applications: Pharmaceutical, chemical dusts, construction, ceramic kilns, refractory materials, foundries, agriculture, woodworking, and the food industry. Low breathing resistance. Bayonet connection system ensures precise and secure locking. Hazards: Organic vapors/acid gases, solid and liquid particles, ozone protection.