Yes, they are.

Are all Descalers the same?

Always use the same brand descaler as the machine or use the Eccellente descalers. Descalers come in many forms (liquid, powder, tablets) but they all have to be dissolved in water to be used. Therefore the easiest is a descaler which is liquid but in the end it does not really matter in which form they come.

What is a decalcifier?

v.tr. To remove calcium or calcium compounds from (bones or teeth, for example). To lose calcium or calcium compounds. de·cal′ci·fi·ca′tion (-fĭ-kā′shən) n.