The Clax Revoflow Calcsoft 13X1 is a powerful and effective solution for water softening in your home or business. The patented formula of this 4-liter cartridge ensures efficient removal of limescale deposits and prevents their re-formation in your water system. Thanks to the innovative technology of the Clax Revoflow Calcsoft 13X1, your appliances such as kettles, coffee machines, and water pipes are protected from limescale buildup. This not only leads to a longer service life for your appliances, but also to improved water quality and optimal taste in your drinks. Using the Clax Revoflow Calcsoft 13X1 is simple and straightforward. The cartridge can be easily installed into your existing filter system and offers a long service life of up to 6 months, depending on your individual water consumption. Say goodbye to annoying limescale deposits and enjoy crystal-clear, tasteless water with the Clax Revoflow Calcsoft 13X1! Mandatory information: Hazard signal Warning/ Hazard statement GHS05 H290 May be corrosive to metals.