Intellical PHC201 is a digital combination pH electrode with built-in temperature sensor. The PHC201 has a non-refillable semi-liquid gel-filled ceramic pin reference junction. This laboratory pH electrode is shockproff with its epoxy plastic body protecting down to the glass bulb sensing element. The electrode is available with a 3 or 1 m cable. The PHC201 pH electrode is recommended for general aqueous applications. PHC201 is not suitable for use with organic solvents, low ionic strength, wastewater, high solids or high alkaline sample types.