Cal-Brite® Plus is a low-pH or acid-based product developed for cleaning evaporator coils, air-cooled condensers and other finned cooling and heating coils. It is based upon glycolic and fluorosilic acids. The activity between the glycolic and fluorosilicic acids, plus surfactant blend results in a synergistic cleaning effect, providing a clean, brightened coil but with the utmost in safety to the applicator and the job site as compared to hydrofluoric acid based products. Cal-Brite Plus technology provides a safer alternative with excellent performance. The synergy of its acidic-based formulation achieves foaming, brightening and cleaning, but without the dangers that are typical to high concentrations of hydrofluoric acid. Because of its low odor and increased safety, Cal-Brite Plus can be used on indoor coils.