Ag/AgCl and non-aqueous Ag/Ag+ reference electrodes
High quality reference electrodes suitable for cyclic voltammetry electrochemistry cells
Aqueous Ag/AgCl reference electrodes and non-aqueous Ag/Ag+ reference electrodes are two of the most commonly used types for cyclic voltammetry and other electrochemical studies. Our low price aqueous Ag/AgCl and non-aqueous Ag/Ag reference electrodes make no compromises on quality and are sold sealed in a ceramic frit junction.
On top of our site-wide large order discount offer, you can now save 5% per electrode when you buy a pack of five and 10% per electrode when you buy a pack of ten. A non-aqueous Ag/Ag+ reference electrode is also included with the Ossila Potentiostat and both variants are available in our amazing value electrochemical cell kits.
Aqueous Ag/AgCl reference electrode
Silver wire coated with silver chloride in direct contact with saturated potassium chloride, typically 3M in concentration in distilled water*
Simple, stable, and capable of miniaturization
Non-aqueous Ag/Ag reference electrode
Silver wire in direct contact with 0.01M silver nitrate of acetonitrile solution* sealed with a ceramic frit
Ideal when organic solvent such as acetonitrile is used in the electrolyte system
*Please note the solution of said concentration is not included with the electrode
Reference electrodes are electrodes with a stable and well-defined electrochemical potential against which the potential of other electrodes in the system can be controlled and measured. They are used in three electrode systems to perform electrochemical methods such as cyclic voltammetry.
Reference electrodes are used as the third electrode in three electrode electrochemical cell systems for cyclic voltammetry and similar studies. They are sometimes referred to simply as the third electrode.
Importantly, reference electrodes have a stable, known and well-defined electrochemical potential. The composition of a standard reference electrode should remain effectively unchanging and constant during the process of electrochemical test and measurement. The role of the reference electrode is to provide a stable potential for controlled regulation of the working electrode potential and in doing so allow the measurement of the potential at the working electrode without passing current through it.
An ideal reference electrode should also have zero impedance. This is determined by the resistance of its isolation junction.
For a standard three electrode cell, the reference electrode should be placed in a frit within the cell. This separates the reference solution from the studied solution. Frits are porous (so that a complete circuit can be formed) but restrict the rate at which the two liquids can mix.
It is advised that the reference electrode should be in as close contact to the working electrode as possible to reduce Ohmic drop between them.
Pseudo reference electrodes, also known as quasi reference electrodes, are reference electrodes which do not have a surrounding reference solution. Since their potential is not defined using a known concentration of ions, pseudo reference electrodes are more likely to suffer from potential drift. This leads to less accurate results.
Ag/AgCl Reference Electrode
Non-aqueous Ag/Ag+ Reference Electrode
*All dimensions are in millimetres.
Pricing and Options
|Product Name||Product Code||Price|
|Ag/AgCl Reference Electrode-Single||C2015B1||£83.00|
|Ag/AgCl Reference Electrode-Pack of 5||C2015B1-5||£394.00|
|Ag/AgCl Reference Electrode-Pack of 10||C2015B1-10||£747.00|
|Non-aqueous Ag/Ag+ Reference Electrode-Single||C2015A1||£83.00|
|Non-aqueous Ag/Ag+ Reference Electrode-Pack of 5||C2015A10-5||£394.00|
|Non-aqueous Ag/Ag+ Reference Electrode-Pack of 10||C2015A1-10||£747.00|
To the best of our knowledge the technical information provided here is accurate. However, Ossila assume no liability for the accuracy of this information. The values provided here are typical at the time of manufacture and may vary over time and from batch to batch.