This is a silver/silver chloride reference electrode with dual compartments separating the reference electrolyte and bridge electrolyte. The electrode is supplied with electrolyte filling, and electrolytes of desired concentrations can also be re-filled easily.

The Ag/AgCl reference electrodes should not be exposed in certain chemicals that form a precipitate of some silver compounds. For example, it cannot be used in the basic medium. In the presence of [OH-] ions, it forms Ag2O or AgOH and gives rise to a mixed Ag/AgCl/Ag2O potential, which is pH-dependent. The Ag2O also builds in the pores of the frit resulting in high impedance. The Ag/AgCl electrode cannot be used in sulfide containing electrolytes due to the formation of insoluble Silver sulfide

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