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Reference Electrodes
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Agar Bridge Kit, Ag/AgCl, Flexible, Leak-free
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There were 10 questions found in this category:
 Does solution exchange take place through the junction of Leak-Free electrodes?
Leak-Free electrodes consist of a unique junction that is robust and highly conductive but not porous. Therefore solution exchange does not take place in either direction. However, the junction is so conductive that solutions need not physically travel from the sample to the electrode for detect ...
- How do I regenerate my Ag/AgCl electrodes?
Ag/AgCl electrodes can be regenerated by one of three methods: (1) passing a current in the opposite direction, (2) attaching the ends of two electrodes together and placing them into Clorox for 10-15 minutes, or (3) scratching up the surface (for pellet electrodes). Option 3 is the weakest.
- How long should a Leak-Free electrode last under normal use conditions?
As long as the connector is not broken, Leak-Free electrodes should last 6-12 months or more.
- How should Leak-Free electrodes be stored?
Unlike conventional reference electrodes, there is no need to store Leak-Free electrodes in concentrated chloride solution. However, if the electrode was left dry for a very long period of time, it should be immersed in water for a few hours to recover. If you plan to use the electrode in soluti ...
- How well do Leak-Free electrodes tolerate acidic/basic solutions?
Leak-Free electrodes are not affected by hydrofluoric acid and common dilute acids and bases. On occasion we have boiled the electrodes in 1M sulfuric acid and have seen no damage. Acetic acid, however, is the exception and should be avoided if possible.
- How well do Leak-Free electrodes tolerate commonly used organic solvents?
Leak-Free electrodes are resistant to most commonly used organic solvents including acetonitrile, DMSO, THF, MEK, acetone, dichloromethane, esters, alcohol, and ketones.
- What is a Ag/AgCl electrode used for, and how does it work?
Basically, the job of a Ag/AgCl electrode is to convert (transduce) a chemical (ionic) current in solution into an electrical (atomic) current in a metal wire (or vice versa). This transduction is achieved by the movement of Cl atoms on and off of the Ag metal wire. When a Cl ion binds to the A ...
- What is the pellet diameter of the HP-205 Hybrid Ag-AgCl pellet/Ag wire assembly (part # 641288)?
The pellet diameter of the HP-205 is 1mm.
- What is the potential of Ag/AgCl electrodes?
There is an excellent Wikipedia page on the subject of silver-silver chloride electrode potential at http://en.wikipedia.org/wiki/Silver_chloride_electrode. However, the standard potential for Ag/AgCl against a standard hydrogen electrode is 230mV ± 10mV.
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