Siemens TZ80002 descaling tablets are specially designed to protect coffee machines from limescale build-up. With them, you can easily remove limescale deposits that have accumulated in the water system of your coffee machine and thus extend the life of the coffee machine. The intensity of limescale build-up depends on the hardness of the water used, which must be measured and adjusted for the coffee machine. Accordingly, the system requests a descaling programme at a certain frequency.