Kalstop is a plant-based product that is easily biodegradable and therefore harmless to the environment, preventing the formation of limescale and extending the life of appliances with boilers. It improves steam emission and keeps the appliance in good condition for a long time, enhancing the energy efficiency of the boiler and keeping the steam ducts clean. Compatible with Vaporetto/Lecoaspira Vaporetto / Unico / Vaporella models. 20 single-use vials of 5 ml.