At Amazon we have discovered the descaling directly from DeLonghi, which is sufficient for a total of four Entkalkungsvorgänge and around EUR 12, - costs. Since we also have a DeLonghi Nespresso machine in action, we wanted to test the product again and compare. The result is identical, but at significantly lower price.
Since it especially is an original product of the manufacturer of coffee and is distributed appropriately by the latter as for all of its products, we expect to see an equivalence of descaling solution to Nespresso product.