Ion Selective Electrode Standards

Ion Selective Electrode Standards are calibration solutions of known ion concentration for ISE measurements. Water, wastewater, environmental and agricultural laboratories use them to build calibration curves and verify electrode response.

The range contains 32 Reagecon standards. Ammonia standards are offered at 1 ppm, 100 ppm and 1000 ppm, expressed either as N or as NH₃, and ammonium standards such as 1000 ppm as NH₄ are also listed. Multi-level sets like these allow a full calibration curve to be built from standards of the same family.

Choose standards that bracket your expected sample concentration, and check whether your method reports the result as nitrogen or as the ion itself, since the two scales are not interchangeable. Most ISE methods also require an ionic strength adjuster, which is listed separately under Ionic Strength Adjusters. Ask us for a quotation on complete calibration sets.