Details: High efficiency particulate filterCaptures a broad range of certain gases and vapors, including mercuryCompatible with the 3M™ Versaflo™ TR-600 PAPR systemFirst multi-gas PAPR cartridge with NIOSH approval for use against mercuryThe 3M™ Multi-Gas/HE Cartridge TR-6590N is a combination High Efficiency (HE) particulate filter and Multi-Gas cartridge (MG) for use with TR-600 series PAPRs. 3M recommends the use of the 3M™ Versaflo™ TR-6500FC Filter Cover to help protect the filter from physical damage.The TR-6590N is a combination High Efficiency (HE) particulate/Multi-Gas (MG) cartridge for use with TR-600 Powered Air Purifying Respirator Systems. This filter/cartridge is suitable for certain particulates, mercury, certain organic vapors, chlorine dioxide, chlorine, hydrogen chloride, sulfur dioxide, ammonia, methylamine, and/or hydrogen fluoride. This filter/cartridge is NIOSH approved for use against the broadest range of airborne contaminants of any Versaflo cartridge. 3M recommends the use of the TR-6500FC filter cover to help protect the filter/cartridge from physical damage. The TR-6500FC filter cover is also used to hold the TR-6600 prefilter or TR-662 spark arrestor in place.