Various laboratory methodologies to evaluate corrosion inhibitors are reviewed. Two new methodologies, high-temperature, high-pressure jet impingement (HTHPJI) and high-temperature, high--pressure rotating electrode (HTHPRE), are presented. Flow patterns and hydrodynamic parameters of rotating cage are presented. Keywords: corrosion inhibitor, rotating cylinder electrode, rotating disc electrode, high-temperature, high--pressure, jet impingement, flow, wheel test, static test, bubble test, pipe