FLOW-AIDE® has the ability to dissolve approximately two pounds (0.91 kg) of calcium carbonate scale per U.S. gallon while at 70°F (21°C) in concentrated form. If the FLOW-AIDE® is diluted, it will still dissolve two pounds per U.S. gallon, but will require additional circulating time. FLOW-AIDE® is a nonhazardous, noncorrosive, noninjurious, nontoxic and biodegradable descaler that is heavily fortified with wetting and penetrating agents which actually dissolve water scale, lime, mud, rust, and other water formed deposits from water operated equipment. The solution is amber in color. RECOMMENDED USES: FLOW-AIDE® is a nontoxic concentrate which is certified to NSF/ANSI 60 for use as a cleaner in potable water systems. FLOW-AIDE® is NSF registered for use in beverage, pharmaceutical, bottling, poultry, and other food processing plants. USFDA has no jurisdiction over the product since it does not come in contact with food.