Electrodes
Small reference electrodes
Everyone needs a reference
Reference electrodes need to have an intrinsic redox potential that is stable. A large variety of small reference electrodes is available to cover all different electrolytes and applications.
In electrochemistry, the most basic equipment to be able to perform your experiment is a reference electrode. A reference electrode has a fixed electrochemical potential and is used to apply a potential difference to the electrode. Depending on your electrolyte and your system, you might want to prefer using chloride-based reference electrodes (Calomel, Ag/AgCl) or sulfate-based electrodes (Hg/HgSO4). Small reference electrodes are compatible with small analytical cells. Replacement kits are also available.
Specifications and ordering information
Aqueous media
Various electrodes are offered using either ceramics or porous glass as material for the junction.
| Catalog No. | Junction | Electrolyte | Purpose | |
| RE-1B reference electrode (Ag/AgCl – length: 78 mm, OD: 6 mm) | A-012167 | IPPG | 3 M NaCl | SVC-2, SVC-3, VC-4, bulk electrolysis, RRDE-3A, flat cell |
| RE-1S reference electrode (Ag/AgCl – length: 52 mm, OD: 4.5 mm) | A-012168 | IPPG | 3 M NaCl | SECM |
| RE-1BP reference electrode (Ag/AgCl – length: 52 mm, OD: 6 mm) | A-013613 | Ceramics | 3 M NaCl | SVC-2, SVC-3, VC-4, bulk electrolysis, RRDE-3A, EQCM, flat cell |
| RE-1CP reference electrode (Ag/AgCl – length 92 mm, OD: 6 mm) | A-013429 | Ceramics | Saturated KCl | SVC-2, SVC-3, VC-4, bulk electrolysis, RRDE-3A, flat cell |
| RE-2BP calomel reference electrode (length: 92 mm, OD: 6 mm) | A-013430 | Ceramics | Saturated KCl | SVC-2, SVC-3, VC-4, bulk electrolysis, RRDE-3A, flat cell |
| RE-3VT reference electrode (Ag/AgCl – screw type, poly acetal resin – length: 52 mm, OD: 10 mm) | A-013488 | Ceramics | 3 M NaCl | for flow cell spectroelectrochemical cell SEC-3F |
| RE-2CP reference electrode (Hg/Hg sulfate – length: 92 mm, OD: 6 mm) | A-013431 | IPPG | Saturated K2SO4 | Free from Chloride Ion |
| RE-61AP reference electrode (Hg/HgO – length: 92 mm, OD: 6 mm) | A-013395 | Ceramics | 1 M NaOH | For alkaline solution |
| Ag/AgCl ink, 2 mL | A-011464 | surface resistance: 0.2 Ω/sq/25.4 µm viscosity: 50,000 ±10,000 CP @21.1 °C flash point: 82 °C |
for micro CV cell, IDA measurment | |
| RHEK Reversible hygrogen electrode kit: | A-013373 | |||
| – RHE Reversible hydrogen electrode (length: 84 mm) | A-013374 | |||
| – RHEK accessories kit (Tubing clamp, Silicone tube, O-ring, female luer fitting, disposable syringe) | A-013378 | |||
| Set of 10 porous 2.8 mm glass frit (CoralPor™) with PTFE heat shrink (200 mm) | 092-VYC3 | |||
| Set of 10 porous 4 mm glass frit (CoralPor™) with PTFE heat shrink (200 mm) | 092-VYC4 |
| Options | Catalog No. |
| RE-PV preservative vial for reference electrode, 10 mL: | A-012108 |
| Bridge tube Ø 9.0 mm (2 pieces) | A-012177 |
| Bridge tube Ø 9.0 mm (22 pieces) | A-012307 |
| Double junction chamber kit (length: 150 mm): | A-013375 |
| – Double junction chamber | A-013376 |
| – O-ring | |
| – PTFE Cap for double junction chamber | A-013377 |
| – Pt counter electrode | A-002222 |
Non-aqueous media (Ag/Ag+)
To avoid electrolyte leakage or concentration due to evaporation during storage or transport, the electrolyte is separated from the body. This gives the possibility to fill it regularly.
| Catalog No. | Junction | Electrolyte | Purpose | |
| RE-7 non aqueous reference electrode (Ag/Ag+ ), (length: 81mm, OD 6 mm) | A-012171 | IPPG* | Ag/Ag+ /ACN**/TBAP*** | CV |
| RE-7S non aqueous reference electrode (Ag/Ag+ ), (length: 52 mm, OD 4.5 mm) | A-012172 | IPPG* | Ag/Ag+ /ACN**/TBAP*** | SECM |
| RE-7VT non aqueous reference electrode (Ag/Ag+) with polymethyl pentene body | A-013489 | Ceramics | Ag/Ag+ /ACN**/TBAP*** | flow cell |
| * Ion Permable Porous Glass ** Acetonitrile | ||||
| *** Tetra Butyl Ammonium Perchlorate | ||||
| Spare parts | Catalog No. |
| Electrolyte solution (10 mL) | A-012549 |
| PTFE cap with Ag wire (for RE-7) | A-012057 |
| PTFE cap with Ag wire (for RE-7S) | A-012058 |
| Sample holder 6 mm diameter (for RE-7) (2 pieces) | A-012176 |
| Set of 10 porous 2.8 mm glass frit (CoralPor) with PTFE heat shrink (200 mm) | 092-VYC3 |
| Options | Catalog No. |
| RE-PV preservative vial for reference electrode, 10 mL | A-012108 |
| Bridge tube Ø 9.0 mm (2 pieces) | A-012177 |
| Bridge tube Ø 9.0 mm (22 pieces) | A-012307 |
Specifications and ordering information
Aqueous media
Various electrodes are offered using either ceramics or porous glass as material for the junction.
| Catalog No. | Junction | Electrolyte | Purpose | |
| RE-1B reference electrode (Ag/AgCl – length: 78 mm, OD: 6 mm) | A-012167 | IPPG | 3 M NaCl | SVC-2, SVC-3, VC-4, bulk electrolysis, RRDE-3A, flat cell |
| RE-1S reference electrode (Ag/AgCl – length: 52 mm, OD: 4.5 mm) | A-012168 | IPPG | 3 M NaCl | SECM |
| RE-1BP reference electrode (Ag/AgCl – length: 52 mm, OD: 6 mm) | A-013613 | Ceramics | 3 M NaCl | SVC-2, SVC-3, VC-4, bulk electrolysis, RRDE-3A, EQCM, flat cell |
| RE-1CP reference electrode (Ag/AgCl – length 92 mm, OD: 6 mm) | A-013429 | Ceramics | Saturated KCl | SVC-2, SVC-3, VC-4, bulk electrolysis, RRDE-3A, flat cell |
| RE-2BP calomel reference electrode (length: 92 mm, OD: 6 mm) | A-013430 | Ceramics | Saturated KCl | SVC-2, SVC-3, VC-4, bulk electrolysis, RRDE-3A, flat cell |
| RE-3VT reference electrode (Ag/AgCl – screw type, poly acetal resin – length: 52 mm, OD: 10 mm) | A-013488 | Ceramics | 3 M NaCl | for flow cell spectroelectrochemical cell SEC-3F |
| RE-2CP reference electrode (Hg/Hg sulfate – length: 92 mm, OD: 6 mm) | A-013431 | IPPG | Saturated K2SO4 | Free from Chloride Ion |
| RE-61AP reference electrode (Hg/HgO – length: 92 mm, OD: 6 mm) | A-013395 | Ceramics | 1 M NaOH | For alkaline solution |
| Ag/AgCl ink, 2 mL | A-011464 | surface resistance: 0.2 Ω/sq/25.4 µm viscosity: 50,000 ±10,000 CP @21.1 °C flash point: 82 °C |
for micro CV cell, IDA measurment | |
| RHEK Reversible hygrogen electrode kit: | A-013373 | |||
| – RHE Reversible hydrogen electrode (length: 84 mm) | A-013374 | |||
| – RHEK accessories kit (Tubing clamp, Silicone tube, O-ring, female luer fitting, disposable syringe) | A-013378 | |||
| Set of 10 porous 2.8 mm glass frit (CoralPor™) with PTFE heat shrink (200 mm) | 092-VYC3 | |||
| Set of 10 porous 4 mm glass frit (CoralPor™) with PTFE heat shrink (200 mm) | 092-VYC4 |
| Options | Catalog No. |
| RE-PV preservative vial for reference electrode, 10 mL: | A-012108 |
| Bridge tube Ø 9.0 mm (2 pieces) | A-012177 |
| Bridge tube Ø 9.0 mm (22 pieces) | A-012307 |
| Double junction chamber kit (length: 150 mm): | A-013375 |
| – Double junction chamber | A-013376 |
| – O-ring | |
| – PTFE Cap for double junction chamber | A-013377 |
| – Pt counter electrode | A-002222 |
Non-aqueous media (Ag/Ag+)
To avoid electrolyte leakage or concentration due to evaporation during storage or transport, the electrolyte is separated from the body. This gives the possibility to fill it regularly.
| Catalog No. | Junction | Electrolyte | Purpose | |
| RE-7 non aqueous reference electrode (Ag/Ag+ ), (length: 81mm, OD 6 mm) | A-012171 | IPPG* | Ag/Ag+ /ACN**/TBAP*** | CV |
| RE-7S non aqueous reference electrode (Ag/Ag+ ), (length: 52 mm, OD 4.5 mm) | A-012172 | IPPG* | Ag/Ag+ /ACN**/TBAP*** | SECM |
| RE-7VT non aqueous reference electrode (Ag/Ag+) with polymethyl pentene body | A-013489 | Ceramics | Ag/Ag+ /ACN**/TBAP*** | flow cell |
| * Ion Permable Porous Glass ** Acetonitrile | ||||
| *** Tetra Butyl Ammonium Perchlorate | ||||
| Spare parts | Catalog No. |
| Electrolyte solution (10 mL) | A-012549 |
| PTFE cap with Ag wire (for RE-7) | A-012057 |
| PTFE cap with Ag wire (for RE-7S) | A-012058 |
| Sample holder 6 mm diameter (for RE-7) (2 pieces) | A-012176 |
| Set of 10 porous 2.8 mm glass frit (CoralPor) with PTFE heat shrink (200 mm) | 092-VYC3 |
| Options | Catalog No. |
| RE-PV preservative vial for reference electrode, 10 mL | A-012108 |
| Bridge tube Ø 9.0 mm (2 pieces) | A-012177 |
| Bridge tube Ø 9.0 mm (22 pieces) | A-012307 |
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