<b>Jura</b>&#39;s CLARIS coffee machine <b>filter cartridge</b> filters the water before every preparation, ensuring consistently high water quality for the perfect cup of coffee. The CLARIS White filter system is used for machines with a black filter holder in the water tank. The filter cartridge protects the machine against calcium deposits for a longer service life. If you are using a CLARIS filter cartridge there is no need to descale the machine. The CLARIS filter cartridge was specially designed for Jura automatic speciality coffee machines. It is pH-neutral to coffee and is placed directly in the water tank.