The Brita Maxtra Pro Limescale Expert filter cartridges are designed to significantly reduce water hardness, helping you protect your household appliances from the buildup of limescale. This set includes six cartridges, providing a total filtration capacity of 900 liters, with each individual unit processing up to 150 liters of water. Water passes through a four-stage filtration process that begins with a super-fine mesh to catch coarse particles, followed by natural microcarbon pearls derived from coconut shells to remove chlorine, odors, and unpleasant tastes. To tackle hardness, ion-exchange pearls reduce limescale and filter out metals such as lead and copper, before the water passes through a final high-performance filter mesh. These cartridges are made from ISCC PLUS certified bio-based plastic, making them a more sustainable choice for your home. They are fully compatible with all existing Brita filter jugs and the Flow dispenser, offering a simple way to maintain your water quality and extend the life of your coffee machines and kettles.