Used regularly, the De'Longhi EcoDecalk machine descaler liquid significantly reduces the likelihood of premature breakdown from scale build-up, increases the energy efficiency, and improves the flavor and crema. Our ecological descaler made with 100 percent lactic acid and is suitable for all espresso/coffee machines. The liquid is easter and quicker to use than coffee machine descaling tablets, and will keep your machine running smoothly so you can always enjoy your favorite beverages. This is enough solution for 4-5 descaling sessions.