ELKPURE Scale inhibitor ELK-220 It is a highly effective liquid scale inhibitor specially developed for reverse osmosis (RO) system. The formation of dirt and iron scale on the reverse osmosis membrane will deteriorate the performance of the water treatment system, and the reverse osmosis membrane needs to be replaced in advance. The dirt and sediment accumulated on the reverse osmosis membrane will cause the deterioration of the permeability, the reduction of the permeability, frequent shutdown, the increase of water consumption and energy consumption.