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Ion-selective electrodes are part of a group of relatively simple and inexpensive analytical tools commonly referred to as sensors. The pH electrode is the most well-known and simplest member of this group and can be used to illustrate the basic principles of ISEs.
The nitrate ISE electrode is intended for measuring nitrate ion concentrations and activities in aqueous solutions. Its preferred applications are found in the fields of water, spinach, meat, soil, fertilizer, and baby food analysis.
With careful use, frequent calibration, and an awareness of the limitations, ISEs can achieve accuracy and precision levels of ±2–3% for some ions and thus compare favorably with analytical techniques that require far more complex and expensive instrumentation.
Nitrate ISEs can be used in aqueous solutions over a wide temperature range, up to 40 °C.
In this guide, you will find information about:
- Nitrate ISE Theory and Principles
- Electrode and Measurement Setup
- Application Tips and Hints
- ISE Electrode Characteristics
- Common Applications
- Troubleshooting
