Reference electrodes
Reference electrodes for use in various kinds of electrochemical measurements using potentiostat. They are characterized by a constant potential, which does not change with the change of ions concentration in solution and are used as a reference for measuring potentials of other electrodes. We offer silver chloride, calomel, hydrogen electrodes for both aqueous and non-aqueous (organic) media. In our offer there are also accessories for storage and regeneration of such electrodes.
RE-1B Silver chloride reference electrode
Catalog number: A-012167
Specifications:
- purpose: for aquesous media
- type: silver chloride (Ag/AgCl)
- length: 80 mm
- outer diameter: 6 mm
- junction diameter: 2.8 mm
- junction: IPPG (ion permeable porous glass)
- isolation: glass
- electrolyte: 3M NaCl
- chemical reaction: AgCl + e = Ag+ + Cl-
- electrode potential: 195 mV vs RHEK (25°C)
- applications: SVC-2, SVC-3, VC-4 cells, RRDE, others
RE-1BP Silver chloride reference electrode
Catalog number: A-013613
Specifications:
- purpose: for aquesous media
- type: silver chloride (Ag/AgCl)
- length: 90 mm
- outer diameter: 6 mm
- junction: ceramics
- isolation: polymethyl pentene
- electrolyte: 3M NaCl
- chemical reaction: AgCl + e = Ag+ + Cl-
- electrode potential: 196 mV vs RHEK (25°C)
- applications: SVC-2, SVC-3, VC-4 cells, RRDE, others
RE-1S Silver chloride reference electrode
Catalog number: A-012168
Specifications:
- purpose: for aquesous media
- type: silver chloride (Ag/AgCl)
- length: 50 mm
- outer diameter: 4.5 mm
- junction diameter: 2.8 mm
- junction: IPPG (ion permeable porous glass)
- isolation: glass
- electrolyte: 3M NaCl
- chemical reaction: AgCl + e = Ag+ + Cl-
- electrode potential: 195 mV vs RHEK (25°C)
- applications: SECM, others
RE-1CP Silver chloride reference electrode
Catalog number: A-013429
Specifications:
- purpose: for aquesous media
- type: silver chloride (Ag/AgCl)
- length: 92 mm
- outer diameter: 6 mm
- junction: ceramics
- isolation: polymethyl pentene
- electrolyte: saturated KCl
- chemical reaction: AgCl + e = Ag+ + Cl-
- electrode potential: 198 mV vs RHEK (25°C)
- applications: SVC-2, SVC-3, VC-4 cells, RRDE, EQCM, others
RE-2BP Calomel reference electrode
Catalog number: A-013430
Specifications:
- purpose: for aquesous media
- type: calomel
- length: 92 mm
- outer diameter: 6 mm
- junction: ceramics
- isolation: polymethyl pentene
- electrolyte: saturated KCl
- chemical reaction: Hg2Cl2 + 2e = 2Hg + 2Cl-
- electrode potential: 241 mV vs RHEK (25°C)
- applications: SVC-2, SVC-3, VC-4 cells, RRDE, EQCM, others
RE-2CP Reference electrode free from chloride ions
Catalog number: A-013431
Specifications:
- purpose: for aquesous media
- type: Hg/Hg2SO4
- length: 92 mm
- outer diameter: 6 mm
- junction: ceramics
- isolation: polymethyl pentene
- electrolyte: saturated K2SO4
- chemical reaction: Hg2SO4 + 2e = 2Hg + SO42-
- electrode potential: 657 mV vs RHEK (25°C)
- applications: cases where the chloride ions are undesirable
RE-61AP Reference electrode for alkaline solution
Catalog number: A-013395
Specifications:
- purpose: for aquesous media
- type: Hg/HgO
- length: 92 mm
- outer diameter: 6 mm
- junction: ceramics
- isolation: polymethyl pentene
- electrolyte: none, delivered with ion-exchange distilled water, to be refilled with 1 M NaOH aqueous solutions by the user
- chemical reaction: HgO + H2O + 2e = Hg + 2OH-
- electrode potential: 118 mV vs RHEK (25°C)
- applications: high pH environments
- notes: keep the reference electrode in a cold dark place
RE-7N Non aqueous reference electrode
Catalog number: A-013848
Specifications:
- purpose: for non aqueous (organic) media
- type: Ag/Ag+
- length: 80 mm
- outer diameter: 6 mm
- junction diameter: 2.8 mm
- junction: IPPG (ion permeable porous glass)
- isolation: glass
- electrolyte: not included (to be prepared and filled by the user)
- applications: SVC-2, SVC-3, VC-4 cells, RRDE, EQCM, others
RE-7SN Non aqueous reference electrode
Catalog number: A-013849
Specifications:
- purpose: for non aqueous (organic) media
- type: Ag/Ag+
- length: 52 mm
- outer diameter: 4.5 mm
- junction diameter: 2.8 mm
- junction: IPPG (ion permeable porous glass)
- isolation: glass
- electrolyte: not included (to be prepared and filled by the user)
- applications: SECM, others
Preservative vial for reference electrode
Catalog number: A-012108
When it is not in use, the recommended way to maintain the reference electrode capability and lifetime, is to keep it in a sealed preservative vial with a solution. This storage solution should be identical to the filling solution of the reference electrode. For 6 mm OD electrodes, A-012108 vial will be the best choice.
Specifications:
- volume: 10 ml
- content: vial + PTFE cap
- optional: RE-7 electrolyte solution, 10 ml (cat. number A-012549)
Hydrogen reference electrode
In our offer you can also find a hydrogen reference electrode with description in separate webpage. If you are interested, please visit it by clicking on following link: Hydrogen reference electrode.
