Depending on the model - a 6TO BW or 7TO BW cartridge fits this first (left) filter head. These cartridges contain Granular Activated Carbon and are focused to mainly handle taste, odour and chlorine.
Depending on the model a 100 / 225 / 350 GPD RO membrane cartridge fits the central filter head. These cartridges contain the membrane filtration that can remove up to 95% of all mineral salts from the water as well as the vast majority of organic chemicals, chlorine and by products, pesticides herbicides etc. The membrane forms a barrier for bacteria and viruses and therefore produces safe water. When outgoing pressure drops, the cartridge has to be replaced.
Depending on the model a 7CC BW / 7DM BW / BW400 cartridge fits this filter head 7CC BW Calcite filter: Increases water hardness by introducing a small amount of calcium carbonate minerals into low hardness/TDS waters. Resulting in balanced drinking water.
These filters can handle a total of 10,000 L / 2,640 gal. water or a max of 1 year operation. The filter indicator on the Water Bottle Filling Stations will advise when to replace this filter.