CLARIS plus- clean water for perfect coffee   Water with a high lime content can damage your coffee machine. Lime deposits in the heating cartridge or the thermo-block and clogs the water pipes. The CLARIS plus filter cartridge protects your machine against lime. The CLARIS plus filter cartridge was specially developed for Jura coffee machines. It can be used with all machines with Integrated Pure Water System© (I.P.W.S.©). The CLARIS plus filter cartridge is installed directly in the water tank.