Laurastar Anti-Calc Cartridge - SMART - Pack of 3, Anticorrosive, Anti-salt, Anti-Calcium Granules, Suitable for Smart U/M/I (Packaging may vary),Features Anti limestone cartridge specially designed by the Swiss engineers of Laurastar Allows you to filter tap water before it is used for ironing Anti limestone, extends the life of your iron Anti salts, improves steam quality Anticorrosive, preserves boiler components The date mentioned on the product is the production date Product Description Product Description Laurastar Limescale Cartridge for Water Filtering, Set of 3 Box Contains 1 x