ALS
Reference electrode for Aqueoous solution (Hg type) 汞參考電極
參考電極選擇
電化學測量中電位的參考是基於參考電極，因此它是一個非常重要的電極。
ALS 擁有多種參考電極，包括用於水溶液、非水溶液、鹼性溶液測量的參考電極以及可逆氫電極。此外，參考電極具有標準尺寸，可以安裝在我們所有的配件中。
此外，為了完成此系列，我們還有螺旋型，可用於我們的交叉流通池、徑向流通池、EQCM 流通池和SEC-光譜電化學流通池。
以下是為您的測量樣品選擇參考電極的快速工具：
Calomel Standard reference electrode (saturated KCl)
SCE (Saturated Calomel Electrode) has been used as reference electrode instead of SHE (Standard Hydrogen Electrode) for the reference potential measurement of electrodes in electrochemical research.
 |
| Reference potential |
| Hg2Cl2 + 2e = 2Hg + 2Cl- E0=241 mV vs RHE (25 deg C) ∗ The reference potential is the measured value using RHEK reversible hydrogen electrode kit (Cat. No. 013597). |
Reference electrode free from chloride ion (saturated K2SO4)
The RE-2CP Reference electrode is recommended, if you dislike a contamination with chloride ion from chloride type reference electrode.
 |
| Reference potential |
| Hg2SO4 + 2e = 2Hg + SO42- E0=657 mV vs RHE (25 deg C) ∗ The reference potential is the measured value using RHEK reversible hydrogen electrode kit (Cat. No. 013597). |
Reference electrode for alkaline solution
The RE-61AP reference electrode is made of Hg/HgO instead of calomel paste, and 1 M sodium hydroxide is used as an electrolyte solution. It is used under high pH environment as reference electrode.
Also, potassium hydroxide solution can be used as a internal solution, instead of sodium hydroxide solution.
 |
| Reference potential |
| HgO + H2O + 2e = Hg + 2OH- E0=118 mV vs RHE (25 deg C) ∗ The reference potential is the measured value using RHEK reversible hydrogen electrode kit (Cat. No. 013597). |
RE-61AP is the new model of RE-6AP.
The resistance to alkaline solution has been improved.
The electrode holder is delivered empty, to be filled with 1 M NaOH aqueous solutions by the user.
Please pay attention to handling.
∗1 M NaOH solution used in this electrode is not provided, also we do not supply.
- Holder material: Polymethylpentene, for the high chemical resistance is used.
- Main body: Screw type to be removable
- Liquid junction: Ceramic tip
| Catalog No. | Description | Electrolyte | Purpose |
| 013693 | RE-2BP Calomel reference electrode | saturated KCl | Standard reference electrode |
| 013692 | RE-2CP Reference electrode | saturated K2SO4 | Reference electrode free from chloride ion |
| 013694 | RE-61AP Reference electrode | – | Reference electrode for alkaline solution |
- Liquid junction: Ceramic tip
- Isolation: Polymethyl pentene
