Replacement Filter Pack for Apex 3 - Stage Under the Counter Water System - Lead Removal (ASIN : B00V90ERPE)

Stage 1 -1 micron polypropylene sediment pre-filter to extract suspended materials such as sediment, rust, insects, and other particles down to 5 micron. (Replace every 6-8 months)

Stage 2 -7 cubic inches of ion exchange resin which reduces lead. The treatment produces carbon dioxide from the bicarbonates in the feed supply. This imparts a pleasant taste to the treated water, while at the same time achieving hardness reduction and a lower pH which largely eliminates the potential for scum or scale formation when using the water for domestic purposes or in the processing of food and beverages.