The Scale Control has been developed to lengthen the lifespan of your Quooker by reducing the water hardness. It is the most reliable descaling solution for the Quooker and improves the taste of the Quooker water. The Scale Control works with an high-capacity ion exchange cartridge (2750 litres at 10°dH) that can easily be replaced at the end of its lifespan. This includes cartridge. Please note this accessory does not include tap.