4M Potassium Chloride Electrode Filling Solution saturated with Silver Chloride (Electrolyte)

Concentrated or saturated Potassium Chloride (KCl) is the optimal electrolyte and filling solution for potentiometric titrations, direct pH measurement, redox or ion measurement where silver/silver chloride or calomel reference electrodes are used. However, saturated KCl is only sparingly soluble below 20°C, so if measurements below this temperature are to be carried out 4M Potassium Chloride remains in solution at a lower temperature. Some electrode manufacturers recommend that the Potassium Chloride be saturated with Silver Chloride (AgCl).
- A good electrolyte must fulfil a number of conditions. The equitransference of the cation/anion combination should be as close as possible to being equimobile, have constant chloride activity, be of high electrical conductance and be as non-chemically reactive as possible. The 4M Potassium Chloride Electrode Filling Solution Saturated with Silver Chloride is a high quality product that fulfils all of these criteria.

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