Greisinger ge 105 bnc l01 co redox electrode for gmh 5530 greisinger ge105 bnc l01 co the ge 105 bnc is a combination orp electrode that is suitable for use in laboratories or for on site measurements the operating range of the electrode is 2000 to 2000mv 0 c to 80 c gt 100 micro s cm typical applications include aquariums fish farming sea water swimming pool water drinking water etc greisinger ge105 bnc l01 co redox electrode for gmh 5530