The 3M 60926 Multi-Gas/Vapor & P100 Cartridge is NIOSH approved against certain organic vapors, acid gases and particulates. These cartridges filter both P100 respirator cartridges are NIOSH certified to have filter efficiency level of 99.7% or greater against oil and non-oil based particulates and most organic vapors and acid gases. This is not rated for use with mercury. See the 3M brochure listed below to help you choose which filter works best for your application. Any filter starting with a “6” will fit both the 1/2 mask and full face 3M 6000 series respirators.