The saturated calomel electrode（SCE） is an electrode composed of metallic mercury and its insoluble salt Hg2Cl2 and KCl solution, and its potential is +0.2415V (25°C).

Specification:
tube diameter: 6 mm
effective length: 70 mm
liquid junction core: microporous ceramic filter core
filling solution: Saturated KCl
potential stability: <5 mV
operating temperature: 0-40 deg C

Notes:

1.When the SCE is used, the rubber stopper of the liquid port should be removed first, so that the salt bridge solution can hold a certain flow rate by gravity and the path of the measured solution.

2.There can be no bubbles in the KCl solution in the electrode to prevent circuit breaking.

3.When measuring, the salt bridge solution surface of the SCE should be a certain distance higher than the surface of the measured solution to prevent the measured solution from diffusing to the SCE.

4.Because the potential of the SCE has a large negative temperature coefficient and thermal hysteresis, the temperature fluctuation of the SCE should be prevented as much as possible during measurement. Accurate measurement should be made by keeping the SCE at a constant temperature.To overcome this shortcoming, a long salt bridge tube is usually added to the lower part of the SCE, so that the SCE is at room temperature, and the temperature of the salt bridge solution is the same as the solution to be tested.

5.If it is found that the measured solution is contaminated with the inside of the SCE solution, the scale should be scraped off or the inner liquid should be replaced from time to time to maintain accurate measurement.

6.Recommended temperature for electrode: ≤40℃.

7.When the electrode is attached with KCl solution or crystal, KCl should be removed at any time.

8.The reference electrode cannot be cleaned under ultrasound.

Different research systems can choose different reference electrodes:
Neutral system------saturated calomel electrode or Ag/AgCl reference electrode
Alkaline system-----Hg/HgO reference electrode
Acidic system-------Hg/Hg2SO4 reference electrode
Non-aqueous system--Non aqueous Ag+ reference electrode

Product Includes:
1 * Saturated calomel electrode with gold-plated pin
1 * cap
1 * fluorine rubber O-ring