“…The American Society of Testing of Metals -ASTM: G -59 -97 (2014) standard describes about the method of conducting a photodynamic polarization measurement by using potentiostat equipment using two and three reference electrodes, electrochemical cells etc., In this test methods, a small potential is applied to find the corrosion rate potential (E corr ) and current density (i corr ) by experimentation. The corrosion rate of metal depends on several factors like time duration of exposure, depending upon surrounding atmospheric conditions, type of media, Temperature of media, material density and surface area of exposure [1,2,3,5]. Several preventive measures are taken to control corrosion rate like coating the metals with paints, non-corrosive metal coatingsetc.…”