The present disclosure relates to a measuring probe for electrochemical measurements, including a probe housing having a first cavity to hold a first electrolyte, a first electrode disposed in the first cavity and contacting the first electrolyte, a first junction disposed in a wall of the probe housing, the junction at least temporarily connecting the first cavity with an environment of the measuring probe, a second cavity formed in the probe housing to hold a second electrolyte, a second electrode disposed in the second cavity and contacting the second electrolyte, and a second junction having reversible open and closed states, in which in the closed state the second junction separates the first cavity and the second cavity and in the open state connects the second cavity to the first cavity, thereby enabling a current flow between the first electrolyte and the second electrolyte, mediated via ions as charge carriers therebetween.