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Ag/AgCl Reference Electrodes
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There were 7 questions found in this category:
 How can a ground wire be attached to a chamber that doesn't have an agar bridge?
A silver-silver chloride ground electrode can be placed directly into the suction well downstream from the sample. Be aware, however, that if you do not continuously perfuse the sample, the silver wire may be able to contaminate the bath.
- 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.
- 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 expected life of the electrode in continuous use?
This depends on the use conditions. For example, a major problem can occur if the user applies too much stress on the pin connector, and it becomes loose. Other than that, there are not too many life-ending factors.
- 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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