Aameria RO Filter GAC (Granular Activated Carbon) + Carbon Block Filter (CTO) Cartridge for Undersink RO 10"-Inch Solid Filter Cartridge  (0.005, Pack of 2)

Removes chlorine, sediment, taste, odor, and organic chemicals The cartridge uses a combination of Granular Activated Carbon. extruded carbon with enhanced adsorptive capacity filters are much more tightly packed than GAC filters means that the blocks filter out far more contaminants. Whereas some contaminants may be able to escape the loose carbon found in GAC filters, the compact nature of carbon block filters means that even the smallest particles and contaminants cannot pass through the filter.