pH Sensor for Hydrolab mulitparameter sondes

HYDROLAB pH Sensor for HL Series Sonde with Integrated Reference

Product Number: HLPHIREF

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The HYDROLAB pH sensor uses a glass bulb measuring electrode with integrated refillable reference electrode, combined into one sonde port. A user-rebuildable reference electrode extends the life of the pH sensor while minimizing costs because the measuring electrode does not necessarily need replacement when the reference electrode is depleted.

(accessory cannot be purchased as a standalone product)


  • Nutrient Monitoring
  • Source Water
  • Surface Water
  • HydroMet