The micro filter cartirdge is for Brooke ultra-filter (under sink and above sink) which needs to be replaced every 24 months.
Note: A cartridge will already be provided upon purchase of your machine.
Micro Filter Cartridge
Microfiltration membrane cartridge. With pore size of 0.1 microns. it can only remove large particles such as sediment, rust and microorganisms. In U608AU unit it is also used as the pretreatment for ultrafiltration cartridge.