The HG Coffee Machine Descaler is citric-acid based, allowing the coffee to continue tasting well. The machine retains its speed, and you extend the life of your espresso or pod-coffee machine. Manufacturers recommend descaling on the basis of lactic acid or citric acid, HG has both. Our espresso machine descaler based on citric acid is enough for descaling 6 times. It works safely and quickly, and is available in a 500ml size.