The anti-scale water filter cartridge, specially designed by Laurastar Swiss engineers, allows you to filter tap water before it is used for ironing. Main Features By preventing limescale, it prolongs the life of your iron By filtering salts, it improves steam quality Anti-corrosive, it also prevents damage to boiler components The cartridge should be replaced when the red light on your station is flashing Compatible Models Laurastar Lift Laurastar Lift Plus Laurastar Lift Xtra