Corrosion inhibitor/antifoulant – cooling water, closed circuit systems RXSOL-40-4025-025 is a superior corrosion inhibitor developed for closed water circulating systems. RXSOL-40-4025-025 is based on a blend of organic and inorganic corrosion inhibitors intended to protect steel, copper and other non-ferrous metals. RXSOL-40-4025-025 is an ideal treatment for closed chilled water and low pressure heating systems. RXSOL-40-4025-025 is NOT intended for use in systems containing Aluminium. When compared with more traditional nitrite-borate based corrosion inhibitors RXSOL-40-4025-025 offers the benefit of a lower dosage rate and will raise the system TDS to a much lesser degree. Dosing of RXSOL-40-4025 should be dosed at 1000 – 2000 ml/m3 in order to give an active reserve of 200ppm of sodium nitrite. In systems requiring significant passivation higher initial dosages may be required to yield the required nitrite residual. RXSOL-40-4025-025 gives complete protection against corrosion and fouling by marine growth such as algae, moss, shellfish andmicro-organisms in seawater cooling systems. It is also usedas an effective biocide to treat diesel engine cooling watersystems against micro-organisms and bacteria.