The anti-limescale filter for ironing water is a particularly fast external filter that can be used to filter tap water for ironing. Thanks to its limescale protection effect, it extends the service life of your iron. The salt protection effect improves the steam quality. The anti-rust effect keeps the components of the steam generator in good condition. 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.