Cal-Brite® 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 acid and ammonium bifluoride. The activity between the glycolic acid and the ammonium bifluoride produces a synergistic cleaning effect, resulting in a clean, brightened coil but with the utmost in safety to the applicator and the job site as compared to HF-based products.