Bilt Hamber Korrosol Iron Fallout Remover 5 LitresKorrosol is a water based, controlled pH, non alkaline, biodegradable, safe and effective iron fallout remover, which removes metallic particles from your wheels, paintwork, glass and trim, leaving a smooth finish. Some background on Iron Fallout: Airborne metallic particles from brake pads and discs fill the air along our roads. When you and the car in front of you brakes, these contaminants embed themselves into your paintwork and other surfaces.