* Description * Features * Ceramic replacement filter for the PURINIZE® DIY Water Filter Kit. This filter is composed of highly compressed ceramic with an absolute pore size of 0.2 microns in diameter while protozoa most bacteria are 0.5 – 1.0 microns in diameter. It's the filter’s first line of defense as it traps particulates, bacteria, and other contaminants from entering the 4-Stage Filter in the lower tank for additional filtration. * * Long-lasting. Replace once every 12 months. * Provides up to 1,000 gallons of safe, clean drinking water. * Easy to replace and maintain.