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Vernier Vernier Nitrate Ion-Selective Electrode Products for Science Education

To measure concentration of Nitrate (NO2) in aqueous samples.

Manufacturer:  Vernier NO3BTA

Catalog No. S16217ND

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Includes: Nitrate ISE, 30mL bottle of Nitrate Low Standard (1mg/L), 30mL bottle of Nitrate High Standard (100mg/L), Short-term ISE soaking bottle, user manual.



  • Determine concentration of nitrate ions in water samples
  • Combination-style, non-refillable, gel-filled electrode
  • Replaceable PVC membrane with limited life expectancy
  • Compatible Interfaces: LabQuest™ 2, Original LabQuest, LabQuest Mini, Go!Link™, SensorDAQ™, LabPro™, EasyLink™, CBL2™, TI-Nspire Lab Cradle™
  • Range: 1 to 10,000mg/L or ppm
  • Accuracy: ±10% of full scale (calibrated 1 to 100mg/L)
  • pH Range: 2.5 to 11
  • Interfering Ions: CIO4, I-, ClO3, CN-, BF4
  • Electrode Slope (log voltage vs. concentration): -56mV/decade
  • Electrode resistance: 1 to 4MOhm
  • Temperature Range: 0° to 50°C
  • Minimum Immersion: 1.1 in.
  • Electrode Length: 155mm
  • Body Diameter: 12mm
  • Cap Diameter: 16mm
  • Cable Length: 100cm
Not recommended for middle school or elementary students.

Order Info

Interface and software sold separately.

Warranty and Services

Five years on electrode and one year on module.



Measuring concentration of Nitrate (NO3-) in aqueous samples.
6.1 in.
0° to 50°C
2.5 to 11
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