These new probes to measure pH or potential ORP / Redox, have been developed specifically for measurements in Laboratory and in continuous systems. Key Features: Double reading chamber, this electrode has a double Ceramic partition with high porosity to improve the exchange of ions between the reference system and the sample. This feature extends probe life and makes the measurement much more stable. • pH probe. Range: 0 to 14. • Hydroline ORP probe. Range: -2000 to +2000 mV. • ORP probe. Range: -1000 to +1000 mV. • Dimensions: probe length 120 mm.