The innovative BWT Magnesium Mineralizer filter cartridges form the ‘core’ of BWT’s table water filter range and are exceptionally long-lasting. A single cartridge filters around 20 more litres than conventional systems, i.e. roughly 120 litres (with water hardness of 15–17.8° dH). This means 120 bottles of water you don’t have to carry around or 120 fewer plastic bottles to dispose of.- More taste with BWT’s patented Magnesium technology- Suitable for all commercially-available oval-shaped filter systems- Capacity of up to 120 litres