① The connecting part between the embedded rebar and the conductive wire should be sealed with epoxy resin, otherwise the solder joint might affect the results.
② The potentiostat/galvanostat must be grounded (please check whether the ground wire of the power cable is connected to the earth).
③ The concrete block must be insulated from the earth, otherwise there may be current leak to the earth, which affects the results. We suggest that the concrete block is placed in a plastic container. If it's a metallic container, you can put a foam board under it for insulation.