VpCI?422/423 Liquid/Gel Organic Rust Removers Description: Effectively removes rust and tarnish from steel, iron, copper, brass and chrome. Non-polluting. Will not harm human skin or adversly affect most paints, plastics, wood, textiles, ceramics or rubber. Application: Apply to concrete surfaces to remove rust stains. Organic, non-polluting, safe to handle. VpCI-422 testing report: VpCI-422 testing.pdf Package:5 gallons (19 liters), 55 gallons (208 liters), totes or bulk or EcoClean?423, 16 oz. (0.47 liter) pump spray bottle.