The integrated anti-limescale water filter is an ultra-fast filter that makes it possible to filter tap water for ironing. Thanks to the limescale protection effect, it extends the service life of your iron. The salt protection effect improves the steam quality. The anti-rust effect helps to maintain the components of the steam generator. The limescale protection granulate must be replaced as soon as it has turned completely brown. Replacements are available in our e-shop, from Laurastar customer service or from authorized Laurastar dealers.