For rust free water from potable water tanks. Also for use in automobile radiators, hot water heaters or wherever rusty water is a problem. Forms a microscopic film over all surfaces it touches so that corrosion in metal pipes or tank is controlled. Colorless, odorless, harmless and non-toxic. 100% biodegradable formula. Product : SUDBURY AQUA CLEAR Manufacturer : SUDBURY Manufacturer Part No : 835Q UPC : 898286002111