Carbon filters are designed primarily for reducing chlorine, sediment, taste, odors, and VOCs in potable water. Although they can be used as a sole filter, carbon filters are an excellent choice for an RO prefilter. Carbon filters also are a good option for use as polishing filters. Many sizes and types are in stock and ready to ship. For information on carbon filters or to purchase, please contact us at 1-800-701-8038 or email firstname.lastname@example.org.