<p>1st Stage: (CD250 Ceramic) – Removes sand, silt, dirt, and rust particles as small as 0.9 micron in sizes.</p><p>2nd Stage: (CD250-Resin) – Softens the water and removes excess minerals and limestone.</p><p>3rd Stage: (CD250 Carbon) – polishing carbon filter to enhance the quality of water for a crisp and refreshing taste.</p><p>NOTE: Filter lifespan may depend on its actual water condition and usage.</p>