Jura Claris Blue Water Filter Cartridge

Coffee contains 98% water. The better the quality of the water, the purer and less adulterated the aroma. CLARIS reliably filters the water to leave the optimum ingredient for perfect coffee: pure water for pure enjoyment. 

The new protective formula was developed especially with modern automatic machines with a One-Touch Cappuccino function in mind. It contains a mineral that stabilizes calcium carbonate.

This isn't then deposited in the fluid system, even with frequent steam preparation, actively preventing the pipes from blocking.
But CLARIS can offer even more: as well as preventing scale, it also filters many other substances detrimental to flavour and aroma out of the water. But the minerals and fluorides that are important for health are retained.