About the Ammonium Ion-Selective Electrode

The Ammonium Ion-Selective Electrode measures levels of ammonium ions introduced from fertilizers. It can also indicate aqueous ammonia levels if sample solutions are acidified to convert NH₃ to NH₄⁺.

• Electrodes are combination-style, non-refillable, and gel-filled.
• It is important for you to know that Vernier ISE membranes, like all other PVC ISE membranes, have a limited life expectancy; however, the replaceable module of Vernier ISEs allows you to simply discard the used one, and replace it with a new module. We recommend that you do not purchase replacement modules far in advance of their expected time of use, as their life expectancy is limited as well.
• Two calibration standards and a short-term soaking bottle.

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