Had the water softener been once in use. Qualitative differences to its predecessor (durgol special descaler) can not be identified or can not even recognize. I hope and think that this Entkalker but equally good or bad as other products also. What convinced me here easily, was the slightly cheaper price relative to other common products. And besides, I only have a bottle in which I can determine the capacity itself (normally per 100 ml descaling recommended).
