As a proud and happy owner of a DeLonghi ESAM6700 I have resorted to the descaler recommended by the Herstelle original. Clear you could save a few euros if you want a no-name descalers fetches, but after the machine had cost a lot of money, I did not save at the wrong place. Despite diligent coffee enjoyment of 3-4 preparations per day the vial Entkalker enough for 8 months, ie every 2 months descaling; Thanks to the fair price of the Amazon are degrees 1,50EU per month. But there's a good, thorough and gentle cleaning of the coffee-with almost a year of consistently high quality coffee. I can only recommend the cleaner, and will continue to use it :-)
