Combined gold ring electrode with a pH glass membrane as reference electrode, installation length = 17.8 cm, narrowed to a diameter of 6.4 mm.
This maintenance-free electrode is well suited for redox titrations when the pH value remains constant, e.g.:
- determination of the chemical oxygen demand (COD, ferrometry)
- determination of penicillin and ampicillin
- for titrations using Hg(NO3)2
- for titrations in presence of chromium or iron
This electrode is stored in deion. water.