Ammonia ISE Filling Solution (4 x 30 mL Bottles) – HI4001-40

The electrolyte solution should be added to the outer probe body of the HI4101 ISE before final assembly to ensure optimum performance.

The HI4001-40 fill solution is a chloride ion-containing electrolyte that is required to provide a reference potential for the HI4101 ammonia gas sensing Ion Selective Electrode (ISE). As ammonia diffuses through the gas permeable membrane, the thin film of electrolyte on the surface of the pH sensing glass undergoes a pH change. The change in pH of the filling solution is proportional to the concentration of ammonia gas in the solution.