The 3M™ Cartridge/Filter 60928 was designed specifically for protection against Radioiodine and Methyl Bromide. The 3M™ Cartridge/Filter 60928 is NIOSH approved against certain organic vapours, chlorine, hydrogen chloride, sulfur dioxide, hydrogen sulfide, hydrogen fluoride and particulates.While NIOSH does not have a test procedure to certify air purifying filters against radioiodine or methyl bromide, this combination cartridge is recommended by 3M for use against radioiodine or methyl bromide at ambient concentrations up to 5 ppm and for not more than one shift. 3M offers a wide array of options when it comes to cartridges and filters. 3M Respirator Cartridges and Filters offer easy installation to your Powered Air Purifying Respirators (PAPR) or Supplied Air Respirator assembly making them a great choice for fast paced industrial environments.