The 3M 6000 Series Half Facepiece Reusable Respirator is one of the lightest reusable half face piece respirators available that can protect against mercury. Its low-profile design provides exceptional visibility and accommodates safety glasses. The 3M™ 6000 Series Half Facepiece Reusable Respirator features easy-to-adjust head straps and a swept back design for the cartridges which improves balance and visibility.  For dentists removing mercury amalgam dental fillings, respirator should be used with NIOSH approved 3M™ Mercury Vapor Cartridge/ P100 Mercury Particulate Filter 60929S or combination cartridge / filter set.