Water softener
2.5 - 8.5 bar | DMEx series
Prominent
The mains water we use mainly originates from rain water which is known to be originally soft. Passing through superficial rock layers, fallen rain dissolves metallic salts (calcium and magnesium salts). Water containing such metallic salts is called hard water.
Definition of water hardness
According to definition, water hardness is a kind of data characterising the salts dissolved in water (calcium and magnesium carbonate).
°dH: German hardness: 1 °dH=17.85 mg/l calcium carbonate (CaCO3) or 1 °dH=10 mg/l calcium oxide (CaO).
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