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for sacricficial anode it's difficult to measure the E OFF , i think is better to use corrosion coupon to mesure the E off

each 25 anode are branched together in one test point

Cu/CuSO4 reference electrode The number Mg anodes is 100 anodes (7kg) spacing approximately 30 metres thanks

Dear expert . We work in new construction (12 inch) pipeline 3 km with 3LPE coating. The method we are used in cathodic protection is Sacrificial anode. We make 4 Test points . The potential (CSE) is around -1600 mv ( pipe over protected) Please advise if there some risk of coating disbanding...