ASC-RO 181 is used to inhibit inorganic scale formation in membrane separation processes. It can inhibit high levels of Calcium Sulfate and can protect the membranes from the hard to remove Calcium Sulfate scales. It controls Calcium Carbonate, Calcium Sulfate, Barium and Strontium Sulfate Scales in waters with a high scaling potential. It controls precipitation of moderate levels of Iron and Manganese