Eco-Tannin.Eco-Tannin, an Oxygen Scavenger for Steam Boilers & Feed Water SystemsHigh performance tannin based boiler water oxygen scavenger scientifically formulated forthe treatment of steam boilers and feed water systems.It is not dependent on the feed water temperature and being organic it does not add to the boilerwater conductivity so reducing the need for blow down (compared with sulphite).It is ideal as a steam boiler oxygen scavenger, and also as a hot water boiler oxygen scavenger.Product Benefits of Eco-TanninTannate film protects metal surfaces.Inhibits scale formation.Protects feed tank and feed lines.Low toxicity product in liquid form, for ease of use.Does not depend on feed water temperature for dosage rate.Does not add to the total dissolved solids (TDS) of the boiler so does not affect blowdown rate.