MSA Comfo® Respirator Cartridge, Chemical, GME/Round Style, For Use With: Comfo® and Ultra-Twin® Respirators, Ammonia, Chlorine, Chlorine Dioxide, Formaldehyde, Hydrogen Chloride, Hydrogen Fluoride, Hydrogen Sulfide, Methylamine, Organic Vapor, Sulfur Dioxide Gas, R95/N95 Filter Class, 0.95 Filter Efficiency, Standard Size, Thread Connection, Resists: Ammonia, Chlorine, Chlorine Dioxide, Formaldehyde, Hydrogen Chloride, Hydrogen Fluoride, Hydrogen Sulfide, Methylamine, Organic Vapors and Sulfur Dioxide