ADJUSTABLE VOC/FORMALDEHYDE CO-ABSORBING USABLE MASK CARTIRDGE AND CANISTER

摘要

Improved filter cartridges (102) and methods of forming filter cartridges (102) operable to filter both polar and nonpolar chemicals are provided. The filter cartridge (102) may comprise a combination of at least two activated carbon filtration materials (210), wherein a first carbon material (211) is operable to effectively absorb nonpolar chemicals and a second carbon material (212) is operable to effectively absorb polar chemicals. The chemical materials may be combined and may form a layer of the filter cartridge (102). The filter cartridge (102) may also be operable to filter particulate matter.