ORG - 191 t (Membrane Antiscalant) combines the product reliability of ORG - 191 t (Membrane Antiscalant) for advanced monitoring and control. ORG - 191 t (Membrane Antiscalant) is a highly effective scale inhibitor whose active components were developed to treat reverse osmosis (RO) systems. ORG - 191 t (Membrane Antiscalant) has shown for over 20 years excellent performance against the following scalants: calcium carbonate, calcium sulfate, barium sulfate, strontium sulfate, calcium fluoride, silica and iron.