HG 174 QUICK DESCALERThe build up of limescale and other deposits will make heater elements consume more energy, making it less efficient and easily worn out. Remove from hot water apparatus such as coffee-makers, washing machines and dish-washers.Direction of use: The directions for use of HG descaler varies with each heating appliances. Hence, the correct application for HG descaler is on the packaging.Note: For thorough removing of all traces of scale, the hardness of the water is a key factor.