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.

Reference Electrodes

 
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)
Reference Electrode RE-2C


 

Reference Electrode RE-2B/RE-2C/RE-1C
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.

 

<<Home                                                                    ALS Main Page