Reference electrodes are one of the main components of anodic protection system which shall be corrosion resistant in addition to their potential stability in corrosive environment. The electrode can have different chemical composition depending on the type of corrosive medium.
Suitable materials for reference electrodes for anodic protection in various environments
| Electrode | Environment |
| Calomel | Sulfuric acid with miscellaneous concentrations Kraft digester |
| Ag/AgCl | Sulfuric acid, fresh or spent Urea-ammonium nitrate Sulfonation plant |
| Hg/HgSO4 | Sulfuric acid Hydroxylamine sulfate |
| Pt/PtO | Sulfuric acid |
| Au/AuO | Alcohol solution |
| Mo/MoO3 | Kraft digester Green or black liquors |
| Platinum | Sulfuric acid |
| Bismuth | Ammonia solution |
| AISI 316 | Nitrogen fertilizer solution |
| Nickel | Nitrogen fertilizer solution Nickel plating solution |
| Silicon | Nitrogen fertilizer solution |
Borna Electronics Co. declares its readiness to design and build a variety of anodic protection reference electrodes based on the requests of respected clients or project needs.