The De’Longhi descaler is a quality product suitable for all coffee machines. High quality materials of vegetal origin make EcoDecalk a natural and efficient limescale remover. Its formula based on lactic acid has a low environmental impact. Laboratory tests show that EcoDecalk is faster and more effective compared to conventional limescale removers. A good, regular removal of limescale from the machine keeps it efficient and avoids malfunction caused by limescale deposits. – Maintains the coffee taste over time and extends machine life. – The 500 ml pack is sufficient for 5 descalings. You can make use of this bottle for 5 descales as it has levels on the bottle.