This product is a saturated calomel reference electrode designed for stable potential measurements in electrochemical analysis and energy materials research. It is available in two configurations: the 232 straight type and the 217 double-salt bridge type, both featuring an outer diameter of approximately 9 mm at the thick section and 5 mm at the thin section, with a total length of 140 mm. The reference solution is factory-filled with saturated potassium chloride. The double-salt bridge variant reduces contamination from sample solutions, making it suitable for long-term or sensitive measurements. Typical applications include potentiometric titrations, pH determination, and use as a reference electrode in battery or corrosion studies, where reproducible and reliable electrode potential is critical.