Perfect for enjoying nice fresh clean water, these water filter acrtridges are handy and easy to use. These cartridges reduce; chlorine which affects taste and odour of water and limescale, protecting your kitchen appliances such as kettles and coffee machines from scale build-up. These cartridges also permanently absorb and retain metals such as lead and copper. These cartrdiges are suitable for all BRITA Classic jugs and some retailer own labels jugs and each cartridge lasts for approximately 4 weeks (no pre-soaking required and they are recyclable).