The effectiveness of Solanum tuberosum (Potato) leaves (STPL) extract and Solanum tuberosum (Potato) roots (STPR) extract as corrosion inhibitor on Duplex Stainless Steel 2101(DSS2101) in 0.5M Hydrogen tetra oxo sulphate (IV) acid (H2SO4) solution were studied by weight loss, electrochemical potentiodynamic polarization and Fourier Transform Infrared Spectroscopy (FTIR) techniques. The increase in...