We offer Ro Membrane Cleaner . OLKLIN-DRO1 is a low foaming liquid designed to remove silt and organic foulants such as colloidal silica, clays, organic colour and bacterial slime from thin film composite membranes. OLKLIN-DRO1 is buffered to prevent the pH limits of a membrane being exceeded in the event of misapplication. OLKLIN-DRO1 should not be used on cellulose acetate membranes, as irreversible damage can occur.