The FI.DO filter-dispenser, or a washer/dishwasher/liner, is an anti-limescale and anti-corrosive phosphate/silicate dispenser. It has a dual function: to filter water from particles in suspension up to 100 microns and prevent the precipitation of calcium and magnesium carbonate that determines and causes limestone scale. It is available in three normal, sandblasted and three-way versions and is equipped with certified phosphate/silicate for drinking water treatment. Its small size allows it to be installed in small spaces.