Nitrate Ion Selective Electrode (ISE)

The Nitrate Ion Selective Electrode (ISE) can be used to measure the concentration of Nitrate (NO3) in aqueous samples.

Measure nitrogen from nitrate ions. NT Sensors manufactures high quality, reliable and low volume Nitrate selective electrodes based on the latest nanotechnology and innovative research.

Nitrate concentration, which can be increased by acidic rainfall, fertilizer runoff from fields, and plant or animal decay or waste, is an important parameter in nearly all water quality studies. Use the Nitrate sensor to determine the concentration of the nitrate ion in a water sample.

The Nitrate ISE is a half reference electrode, all-solid state. Like all other PVC ISE membranes, the ISE has a limited lifespan. However, the replaceable module of ISE allows you to simply discard the used membrane module, and replace it with a new one. Check different nitrate modules and sensors available.

ion selective electrode
  • Range (concentration): 1 to 32,000 mg/L (or ppm)
  • Reproducibility (precision): ±10% of full scale (calibrated 10 to 1000 mg/L)
  • Interfering ions: CIO4, I, ClO3, CN, BF4
  • pH range: 2–11 (no pH compensation)
  • Temperature range: 0–40°C (no temperature compensation)
  • Electrode slope: +56 ±4 mV/decade at 25°C
  • Electrode resistance: 1–4 MΩ
  • Immersion minimum: 2 mm
  • Electrode length: 155 mm
  • Body diameter: see different sensors