The Omnipure CL10RO inline water filters contain coconut shell granular activated carbon to reduce chlorine taste and odor. Coconut shell carbon provides better tasting water than regular carbon inline filters. Typically used in ice machines, water coolers, drinking fountains, under sink systems, and reverse osmosis systems. Additional Details ------------------------------ Product description: The Omnipure CL10RO inline water filters contain coconut shell granular activated carbon to reduce chlorine taste and odor. Coconut shell carbon provides better tasting water than regular carbon inline filters. Typically used in ice machines, water coolers, drinking fountains, under sink systems, and reverse osmosis systems.