Mains water contains impurities in addition to calcium carbonate and minerals.

The largest proportion of water hardness is exhibited by a white, non-water soluble deposit which settles over a long period in the machine and on dishes. Limescale deposits and associated damage to the dishwasher are prevented by softened water, i.e demineralised water. At the same time detergent and rinse aid are able to achieve their full effectiveness and thus ensure better cleaning results with lower consumption.

Despite water softening, water-soluble mineral salts remain on the dishes. They considerably impair the cleaning result of glasses, dark dishes and cutlery. Partial demineralisation on the other hand reduces the mineral content in the water to a large degree and thus produces nearly deposit free cleaning results.

Full demineralisation completely removes salts and minerals from the water. In terms of quality, it is comparable with distilled water and does not leave any deposits on dishes, cutlery and glasses. Resulting in a dazzling, deposit free shine without the need for time-consuming polishing.

Water treated using reverse osmosis is filtered through membranes. Hardly any deposits are left on dishes, cutlery and glasses after washing. Polishing by hand is a thing of the past as the dishes come out of the dishwasher spotlessly clean and sparkling.