502 ring ORP composite electrode is composed of indicator electrode (platinum ring) and silver-silver chloride reference electrode. The electrode shell is made of polycarbonate plastic, and the electrode is used for the determination of the oxidation-reduction potential in the solution, such as the online measurement of the oxidation-reduction potential of chromium-containing wastewater in the production of printed circuit boards.

The main technical parameters

1. Applicable temperature of electrode: 5～70 ℃

2. Electrode internal resistance: ≤10kΩ

3. Electrode stability: ±8mV/24h

4. Standard electrode potential: (25℃)

86mV±15mV (In pH7.00 buffer solution, add excess quinhydroquinone to make it saturated.)
265mV±15mV (In the pH4.00 buffer solution, add excess quinhydroquinone to make it saturated.)