Features These filters and cartridges are compatible with 3M 6000, 6500, 7500, or FF-400 reusable respirators. Particulate filters and vapor cartridges are NIOSH-rated and installed in reusable half-mask or full-face respirators to filter out airborne contaminants. They are selected based on the environment and type of respiratory hazards that need to be filtered. They can be changed out when they become dirty or when the type of contaminant changes. Filters and cartridges are compatible with a specific brand and mask model. NIOSH Rating / P100 Color Code / Magenta Compatible with Brand and Series / 3M 5000 Series, 3M 6000 Series, 3M 7000 Series, 3M FF-400 Series Respirator Cartridge Type / Air Purifying Respirator Respirator Connection Type / Bayonet Series / 6000 Standards / NIOSH