3M Hydrogen Fluoride Cartridge comes with P100 filter which provides nuisance level protection against organic vapor and acid gas exposures. It is compatible with 6000, 7500 series and 7800 series air purifying respirator. It features side inlet design and is lighter weight than traditional cartridge. It meets NIOSH 42 CFR part 84 standards and includes spring loaded plastic case that allows for daily fit test. It is use in a variety of applications such as welding, brazing torch cutting, metal pouring and soldering. Do not use for respiratory protection against organic vapors or acid gases except hydrogen fluoride.