In-Situ - Aqua TROLL pH/ORP Sensor (P/N: 0063470) - OVERVIEW
Manufactured by:  In-Situ

The pH/ORP sensor is compatible with the Aqua TROLL 500 and Aqua TROLL 600 multiparameter sondes, featuring a single-junction, three-electrode sensor with refillable reference solution.

This combination pH sensor and ORP sensor has been redesigned to significantly increase sensor stability and data accuracy while minimizing maintenance.


  • Glass electrode pH sensor
  • pH measurement to 0.01 pH resolution with accuracy of +/-0.1 pH unit or better
  • Long Term Stability: The Aqua TROLL pH sensor change is 0.0008 pH/day, or a change of 0.1 pH in 125 days! Learn more »
  • ORP probe accuracy of +/-5mV across range of +/-1400mV
  • pH electrode consists of pH-sensitive glass with voltage proportional to hydrogen ion concentration
  • Uses potentiometric method for pH measurement
  • ORP sensor uses a potassium chloride (KCl) solution
  • Accurate water quality data: Reference electrode supplies a stable output for measuring ORP and pH in a wide range of applications.
  • Minimal maintenance: Increased ph/ORP sensor stability, refillable reference solution and replaceable reference junction streamlines maintenance.
  • Simplified data collection: Suitable for remote monitoring via telemetry, wired or wireless installation methods.