Digital multi-parameter electrodes are ideal for portable field measurements, allowing you to connect pH, dissolved oxygen, conductivity, or ORP electrodes to it in any combination, including multiple sensors of the same type, and some models perform all these functions within a single probe, reducing overall bulk and equipment requirements. These electrodes are easy to use and offer temperature readjustment, theoretical calibration, iso-potential adjustment or calculation, and more. Hardy, rugged constructions means little maintenance is required.