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CDIM Corporate Safety Program <br /> �M HSP-2. Respiratory Protection <br /> Rev. 1 08/23/2018 <br /> COLOR CODES FOR RESPIRATOR CARTRIDGES <br /> Atmospheric Contaminants Cartridge Colors a <br /> Acid gases White <br /> Hydrocyanic acid gas White with 1/2-inch green stripe completely <br /> around the canister near the bottom <br /> Chlorine gas White with 1/2-inch yellow stripe completely <br /> around the canister near the bottom <br /> Organic vapor Black <br /> Ammonia gas Green <br /> Acid gases and ammonia gas Green with 1/2-inch white stripe completely <br /> around the canister near the bottom <br /> Carbon monoxide Blue <br /> Acid gases and organic vapors Yellow <br /> Hydrocyanic acid gas and chloropicrin vapor Yellow with 1/2-inch blue stripe completely <br /> around the canister near the bottom <br /> Acid gases, organic vapors, and ammonia Brown <br /> gases <br /> Radioactive materials, excepting tritium and Purple (Magenta) <br /> noble gases <br /> Particulates (dusts, fumes mists, fogs or Canister color for contaminant, as designed <br /> smokes) in combination with any of the above above, with 1/2-inch gray stripe completely <br /> gases or vapors around the canister near the top <br /> Particulates with oil resistance. Pink (P100) <br /> All of the above atmospheric contaminants Red with 1/2-inch gray stripe completely <br /> around the canister near the top <br /> Gases not listed Orange b <br /> Notes: <br /> a= Gray shall not be assigned as the main color for a canister designed to remove acids. <br /> b= Orange shall be used as a complete body or stripe color to represent gases not included in this table.The user will <br /> need to refer to the canister label to determine the degree of protection the canister will afford. <br />