The anti-limescale cartridge was specially developed by the Swiss engineers at Laurastar and makes it possible to filter tap water for ironing. The limescale protection extends the life of your iron. The salt protection effect improves the steam quality. The components of the steam generator are maintained by the rust protection effect. The anti-limescale cartridge must be replaced as soon as the anti-limescale granulate has completely turned brown. Attention, for the use of this cartridge the suitable filter cartridge is needed.