NIOSH approved for certain organic vapors, acid gases and particulates. 3M recommended for use against radioiodine or methyl bromide with 3M™ Half and Full Facepieces 6000 Series and 3M™ Half and Full Facepieces 7000 Series with bayonet cartridge ho 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
