Neutralization/Taste Cartridge, For Use With Pentek 150237-75, Pentek 150469-75, Pentek 150239-75, Application pH neutraliztion, taste and odor The Aries Filterworks AF Series Calcor (combination of Calcite and Corosex) filter cartridge helps remove chlorine to improve taste and color, while also neutralizing pH. The media slowly dissolves and helps stabilize acidic feedwater. Double-open end cartridge fits standard residential and industrial housings. 4-1/2″ x 10″ cartridge.