Ion Specific Electrode for HL Sondes - Nitrate

HYDROLAB Nitrate ISE Sensor for HL Series Sonde

Product Number: HLNO3

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The HYDROLAB Nitrate ISE sensor is a reference electrode immersed in a solution of fixed nitrate ion concentration separated by a membrane containing a chemical compound that reacts with the ion of interest, measuring electrical potential that varies with concentration.

(accessory cannot be purchased as a standalone product)


  • Nutrient Monitoring
  • Source Water
  • Surface Water
  • HydroMet