Reference electrodes
Reference electrodes are widely used as for electrochemical measurements (CV, LSV, DPV etc.) and electrochemical devices (electrochemical detectors for HPLC, electrochemical biosensor etc.). Various kinds of them such as aqueous, non-aqueous, calomel and own-constructing types are available.
| Catalog No. | Description | Length(mm) | OD(mm) | Liquid Conjunction Tip | Configuration of Electrode |
| Applications | |||||
| 010248 | RE-1B Silver - silver chloride reference electrode | 70 | 6 | Vycor glass | Ag/AgCl/NaCl |
| Ag/AgCl Reference electrode for CV | |||||
| 010596 | RE-1S Silver - silver chloride reference electrode | 40 | 4 | Vycor glass | Ag/AgCl/NaCl |
| Ag/AgCl Reference electrode for SECM | |||||
| 010386 | RE-1C Silver - silver chloride reference electrode | 90 | 6 | Ceramics | Ag/AgCl/KCl |
| Ag/AgCl/Saturated KCl Reference electrode | |||||
| 010298 | RE-3V Silver - silver chloride reference electrode | 48 | 10 | Vycor glass | Ag/AgCl/NaCl |
| Ag/AgCl Reference electrode applied to Flow cell | |||||
| 010385 | RE-2C Reference electrode | 90 | 6 | Ceramics | Hg/Hg2SO4 |
| Reference electrode, free from influence of chloride ion | |||||
| 010244 | RE-2B Caromel Reference electrode | 90 | 6 | Ceramics | Caromel |
| Available as a standard electrode of reference electrodes | |||||
| 012042 | RE-7 Non Aqueous reference electrode | 70 | 6 | Vycor glass | Ag/Ag+/ACN/TBAP |
| Ag/Ag+ Reference electrode for CV of Non-Aqueous solvent | |||||
| 012043 | RE-7S Non Aqueous reference electrode) | 40 | 4 | Vycor glass | Ag/Ag+/ACN/TBAP |
| Ag/Ag+ Reference electrode for SECM(Scanning Electrochemical microscopy) | |||||
| 010382 | RE-6 Reference electrode Kit Length:70mm | 70 | 6 | Vycor glass | Ag/Ag+ or Ag/AgCl |
| Unique Reference electrode Kit for Non Aqueous solvent | |||||
| 011831 | RE-6H Reference electrode Kit available in alkaline solution | 90 | 6 | Ceramics | Hg/HgO1M NaOH |
| Reference electrode Kit available in alkaline solution | |||||
*RE-5 and RE-5S were remodeled to RE-7 and
RE-7S.
Reference Electrode potentials at 25C°
| NHE(Normal Hydrogen
Electrode)-------------- 0mV SCE(Saturated Calomel Electrode)-------------- 241mV SSCE(Sodium Saturated Calomel Electrode)---- 236mV Ag/AgCl(Saturated KCl)------------------------ 199mV Hg/Hg2SO4(Saturated K2SO4)------------------ 650mV |
"Akira Fujishima, Masuo Aizawa, Toru Inoue, "Methods of Electrochemical Analysis(1984)" Gihodo shuppan"
RE-2C Reference Electrode [Catalog No.010385]
|
Developed for the sake of eliminating any
influence of chloride ion from measurements.
Consists of mercury, mercury sulfate and
saturated potassium sulfate solution. Hg2SO4 + 2e = 2Hg + SO42- E0 = 650mV VS NHE(25°C) |
 |
 |
|
| 010244 RE-2B Caromel Reference electrode | 010386 RE-1C Silver - silver chloride reference electrode |
|
Hg2Cl2
+ 2e = 2Hg +2Cl- E0 = 241mV VS NHE(25°C) |
AgCl + e = Ag+
+ Cl- E0 = 199mV VS NHE(25°C) |
| RE-2B Caromel Reference electrode and RE-1C Silver - silver chroride reference electrode have the same shape as RE-2C. |
Supporting Electrolyte
Supporting electrolyte is indispensable in electrochemistry. Following terms should be taken into account to choose adequate one for your application:
1. Soluble enough in solvent
2. The potential window is wide
3. Nonreaction with solvent and sample
|
Common Support Electrolyte using for
organic solvent: TMAP: Tetra methl ammonium perchlorate TBAF: Tetrabutyl ammonium fluorophosphate etc. |