Ecosoft Reverse Osmosis- Aquacalcium Replacement Filter Kits 6 month / 12 month INSTALLATION & USE The reverse osmosis membrane purifies water at the molecular level and can filter up to 99.8% of impurities including bacteria and viruses, unpleasant tastes or odors.The reverse osmosis is a physical, not chemical method of water treatment. The membrane replicates the natural structure of the plant membrane. 6 Month Kit Comes supplied with the below 5 filters5 micron sediment PP filter removes large particulates of silt, sand and rustGranular activated carbon (GAC) filter reduces content of chlorine, chlorination byproducts and natural organic matterCTO coconut shell carbon filter - reduces content of chlorination byproducts and sedimentsMineralization filter Ca+++ contains a mineral composition which was formulated to enrich water with essential dietary minerals, including calcium.Coconut shell carbon post-filter improves taste and odour of the purified water 12 Month Kit Co