This single-cell electrolysis bath, available in both non-sealed and sealed configurations, is designed for precise electrochemical measurements in advanced materials and energy research. The cell features a glass bath body with a polytetrafluoroethylene (PTFE) cover, offering excellent chemical resistance and thermal stability. Temperature control is achieved via a water bath, enabling consistent experimental conditions. The PTFE cover can be perforated as needed to accommodate standard three-electrode setups, making it suitable for a wide range of analytical and battery-related studies. The sealed variant (C003-S) provides an additional gas-tight environment, ideal for air-sensitive or inert atmosphere experiments. Common applications include cyclic voltammetry, impedance spectroscopy, and electrolysis testing in materials science and battery research. With capacities from 50 ml to 150 ml, this cell supports flexible experimental design while maintaining reliable performance.