Platinized niobium probe anodes are rods, which are covered with a platinum coating. With platinised niobium probe anodes the electrical current transfer is accomplished through the platinum coating thereby allowing the probe anodes to with stand water turbulence without damage. The specific platinum coating coating is immune to the abrupt current reversals. Exposing platinized niobium probe anodes to high-curresnt overloads for initial structure polarization causes no harm to the anode.