... USDA authorized 3,Neutral, Non-toxic, odories 4,Contains corrosion inhibitors Coil Safe have passed the ASTMD detection by the NEW ... immersion test show that Coil Safe has no any corrosion for fin.Coil Safe is a neutral concentrated indoor ... :1,Biodegradable2,USDA authorized3,Neutral, Non-toxic, odories4,Contains corrosion inhibitors Directions1, Stop operating system.2, According to the cleaning ...