I need to use anhydrous electrolyte, so an aqueous reference electrode is not suitable. What are the alternatives?
If contamination by water from aqueous electrodes is a problem, there are a number of alternatives. The simplest is to use a salt bridge containing the anhydrous electrolyte to separate the aqueous reference electrode from the analyte solution. Other alternatives include using a non-aqueous reference electrode or a pseudo-reference electrode. The BAS non-aqueous reference electrode (MF-2062) requires user assembly, and consists of a silver wire immersed in a solution containing silver nitrate (0.001 – 0.01 M) dissolved in a solution of an appropriate electrolyte. Ideally, this electrolyte is the same as that used for the analyte (to eliminate junction potentials), but not all organic solvents are suitable (acetonitrile, DMSO, methanol, ethanol, and THF are suitable, whereas DMF and chlorinated solvents are not). If the analyte electrolyte is not suitable, an acetonitrile-based electrolyte can be generally be used. The potential of the non-aqueous reference electrode depends on the solv
If contamination by water from aqueous electrodes is a problem, there are a number of alternatives. The simplest is to use a salt bridge (MF-2030) containing the anhydrous electrolyte to separate the aqueous reference electrode from the analyte solution. Other alternatives include using a non-aqueous reference electrode or a pseudo-reference electrode. The BASi non-aqueous reference electrode (MF-2062) requires user assembly, and consists of a silver wire immersed in a solution containing silver nitrate (0.001 – 0.01 M) dissolved in a solution of an appropriate electrolyte. Ideally, this electrolyte is the same as that used for the analyte (to eliminate junction potentials), but not all organic solvents are suitable. (Acetonitrile, DMSO, methanol, ethanol, and THF are suitable, whereas DMF and chlorinated solvents are not.) If the analyte electrolyte is not suitable, an acetonitrile-based electrolyte can generally be used. The potential of the non-aqueous reference electrode depends on
