North Defender Ammonia Cartridges P100 For are effective against a number of contaminants. North Defender P100 Filter/Cartridge is a small, light cartridge, yet delivers complete P100 protection. Pancake Filter can be used by itself as a P100 filter and as a prefilter on all cartridges except the Defender. NIOSH approved when used with North respirators.
Ammonia/Methylamine P100 Pack of 2