Amazing 30,000 gallon chlorine capacity and great chemical removal properties. Our most popular cartridge. (Formerly MatriKX +1.)

A tight nominal 1 micron carbon block, the CTO Plus is the standard cartridge for our Model 77 countertop filter and all our Black and White under-sink filters. It's the final filter in our best reverse osmosis units. As its name indicates, it is a “Chlorine/Taste/Odor” filter, plus a top performing chemical remover.