Carbon Impregnated Cellulose (CIC) Filter Cartridges combine the performance of depth filtration with the absorption of activated carbon fine. The outside deep filter media can remove particles while the activated carbon held within the filter cloth can absorb the smell, odor, sediment, pigment. VOC, and organic chemicals. The inside fiber filter prevents carbon particles and fine pollutants form passing through, thus increasing an efficient quality and integrated filtration.