The TR-6590N is combination High Efficiency (HE) particulate filter and Multi-Gas cartridge (MG) for use with TR-600 series PAPRs. 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.