Carbonate hardness

Carbonate hardness refers to the level of dissolved carbonates and bicarbonates in the water. These substances can settle on surfaces in the form of limescale when the water cools or rises. Carbonate hardness is usually measured in degrees of German hardness (°dH).

It is important to note that carbonate hardness is not the same as total hardness, which also includes other ions such as calcium and magnesium.