A reference electrode is an electrode which has a stable and well-known electrode potential. The high stability of the electrode potential is usually reached by employing a redox system with constant (buffered or saturated) concentrations of each participants of the redox reaction
Cu/ CuSO4 Reference Electrode
Various types of Cu/CuSO4 half cells are available in SDP works including both of Stationary (Permanent) and Portable electrodes.
Ag/AgCl Portable Reference Electrode
GMC Silver – Silver Chloride reference electrodes for use in seawater and brackish water, river mouths, estuaries, sea water and high chloride waters.
Zinc Reference Electrode
Zn/ZnSO4 Reference electrodes are permanently installed in soil to facilitate the potential measurement of the protected structures.