Melitta® descaler with the concentrated power of citric acid gently and thoroughly removes all limescale deposits. 2 sachets with fine descaling powder 40g. To remove limescale deposits from the water pipes, we recommend using the Melitta® descaler after 100 brewings at the latest (depending on the water hardness in your region). Ingredients: 100% citric acid. 2 sachets with fine descaling powder 40g.