The Aquaphor A5 filter cartridge stands for efficient, quality filtration. Thanks to the unique, patented Aqualen(TM) technology (ion exchange fibre), the water flow in the cartridge is improved and thus the filter efficiency is increased. It reliably reduces the water hardness and thus prevents limescale build-up. In addition, the A5 cartridge filters the following substances: chlorine and other organic chlorine compounds - metals: iron, lead, copper, mercury, pesticides, phenols, etc. - other substances that affect odour and taste - sediments: sand, rust, etc. Bring out the real flavour of your teas and coffees, improve the taste of your salads & vegetables and prolong the life of your kitchen appliances. Further product information: This pack contains 4 filter cartridges with up to 2 months or 350 litres of clear, soft and great tasting water per filter (depending on water quality and hardness). All parts of the cartridge are BPA-free. Colour of the cartridge: white. Cartridge change: once the capacity of the cartridge is exhausted, or the cartridge change indicator is in the red area.