Adey Magna Clean MCZero, and MCZero+ , MCZero+ is a monopropylene-based glycol solution designed to prevent freezing in all types of water. The formulation also contains an inhibitor to protect against corrosion and scale formation and a biocide to prevent bacterial contamination. Specially designed to protect low temperature heating and cooling systems.
MCZero functions the same as MCZero+ except for bacterial protection.