This mercury oxide reference electrode (model R501, brand Tianjin Aida) is designed for stable potential measurements in alkaline media, where its mercury/mercury oxide (Hg/HgO) inner element and a factory-filled 1 mol potassium hydroxide reference solution ensure reliable performance. The electrode delivers a well-defined potential of 0.098 V (vs. SHE) with a temperature coefficient of -1.12 mV/K, making it suitable for electrochemical studies in strongly basic electrolytes. Its construction supports consistent reference potential in applications such as battery research, corrosion testing, and fundamental electrochemistry requiring an alkaline-compatible reference. The straight-form design facilitates integration into standard three-electrode cell setups. This product offers a practical choice for researchers working with alkaline solutions who need a stable, commercially available reference electrode.

Product features: The as-delivered reference liquid is 1 mol potassium hydroxide.

Mercury oxide electrode R501