3M™ Replacement Cartridges, used with 3M 6000 or 7500 Series face pieces for professional removal of certain mold, lead and sprays from coatings and sealants, are NIOSH approved and offer at least 99.7% efficiency against solid and liquid aerosols, including oils. Easy to use, 3M™ Replacement Cartridges are a great choice in respiratory protection for the pro.