Complete cartridge filtration kit for OsmÔ, OsmÔ Bulle and OsmÔ Easy water fountains containing 1 sediment filter, 1 compacted carbon filter and 1 coconut carbon finishing filter. The sediment filter removes larger particles, the carbon filter eliminates chlorine and chemical pollutants, while the finishing cartridge removes unpleasant odors and tastes. Replacement recommended every 12 months. Replace the osmosis membrane independently every 18 months (OsmÔ, OsmÔ Bulle) or the ultrafiltration membrane every 6 months (OsmÔ Easy).