Maintain the character of your coffee and increase the life of your coffee maker. Coffee makers, kettles, and fully automatic coffee machines should be descaled and cleaned approximately every 40 uses, depending on the hardness of the water. Melitta's descalers are adapted to the sensitivity of different machines and are available in tablet form, as a powder and in liquid form. For the growing group of fully automatic coffee machines, there is a milder remedy that takes into account the fine mechanics of advanced machines. Melitta descaling and cleaning agents work equally well with all brands. PERFECT CLEAN Espresso MachinesCleaning agents for coffee and espresso machines that remove oils and other coffee residues. Weight/Volume 4x1.8g