Rydlyme, the world's leading biodegradable descaler, is manufactured by Apex engineering products corporation. Rydlyme isn't water treatment or water conditioner; it's designed to replace acid cleaning or derusters, lime removers, solvents, and cleaners. Rydlyme, unlike other water cleaneror water scale remover, is safe on heat exchangers, chillers, condensers, cooling towers, & vacuum pumps.