Protect your central heating system against corrosion and limescale, with this high quality corrosion inhibitor.Designed especially for use with heating systems that include heated towel rails, this inhibitor is suitable for use with all types of boiler and can be quickly and easily added to your system via a radiator.1 tube contains enough concentrate to treat 100 litres or 10 radiators, and helps prevent a noisy boiler, sticking pumps, whilst reducing cold spots.Comes complete with applicator nozzle and is BuildCert approved.