Cleaner and clearer water for great tasting hot and cold drinks and delicious food, The Brita Maxtra filter cartridge with the unique Maxtra 4-Step Filtration has 20% improved limescale reduction compared to the Brita Classic cartridge. It also reduces other substances such as chlorine (which affect the taste and odour in your tap water), aluminium and certain heavy metals (like copper and lead) along with certain pesticides.