pH Sensor for Hydrolab mulitparameter sondes

HYDROLAB pH Sensor for HL Series Sonde with Standard Reference

Product Number: HLPHSREF

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The HYDROLAB pH sensor uses a glass bulb measuring electrode and refillable reference electrode, each in their own 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)


  • Surface Water
  • Nutrient Monitoring
  • Source Water
  • HydroMet