Help protect your Bosch steam iron against the build-up of limescale with TDZ1101 descaling liquid, the efficient solution against limescale. Periodic descaling of your Bosch steam iron will help prevent damage caused by limescale and help to ensure best ironing performance. This descaling liquid can only be used on Bosch TDA50, TDA70, TDS12 and TDI90 range of irons. The liquid supports the Bosch CalcnClean function on this range of irons by dissolving limescale particles, helping to prolong the life of your iron.