Marine Instruments
Marine Instruments » Multiparameter Sondes, CTDs & SVs » Sensors » Product Details

For more information about this product please call +44 (0) 2392 488 240 or email us using the web form below:


pH Sensor

The Hydrolab pH sensor uses glass bulb and refillable reference electrode for reliable data from a sensor that is easily maintained and long-lasting.


KCl impregnated glass bulb is permeable to hydrogen ions; reference filled with 3M KCl and has a porous Teflon junction. Salt bridge is formed between the two, and a potential is measured.
Choice of standard or integrated refillable reference
Optionally paired with ORP sensor



Reference electrode is easily refilled in seconds – independent of the pH sensor
pH sensor does not need replacement when reference electrode is depleted; simply refill the reference

Technical Specifications


0 to 14 pH units
+/- 0.2 units
0.01 units


DataSonde 5X

DataSonde 5

MiniSonde 5

Marine Instruments


Similar Instruments:
Featured Instruments