With Anti Calc Bio Liquid descaling liquid you remove stubborn scale deposits and it is suitable for fully automatic coffee machines, filter coffee machines, kettles, surfaces and accessories. Melitta softeners are fully biodegradable containing citric acid and are environmentally friendly. The citric acid is already dissolved and so can be used immediately, it only needs to be diluted. Regular descaling not only extends the life of your appliance, but can also ensure the preparation of excellent and authentic tasting coffee. Hazard and Precaution Statements: Warning! Causes serious eye irritation. If medical advice is required, have product container or label available. Keep out of reach of children. Wear eye protection. IF IN EYES: Rinse carefully with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing. If eye irritation persists: Seek medical advice/attention.