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
0 to 14 pH units
+/- 0.2 units