Including dissolved oxygen meter, pH meter, potentiometer, ion meter and other instruments, is an ideal tool for electrochemical analysis, research and teaching, can be widely used in the environment, energy, materials, biology, pharmaceutical and metallurgy and other fields. It is a kind of universal electrochemical analysis system, also called electrochemical workstation. Integrated more than ten commonly used electrochemical methods, generally also equipped with a variety of electrochemical accessories, to provide a full range of service support.