This lecture introduces Supercritical Fluid Chromatography (SFC) and Complementary Phase (CP) chromatography, highlighting the benefits of each technique. SFC combines the advantages of liquid and gas chromatography, offering high efficiency, rapid diffusion, and high selectivity. The lecture covers the physical properties of supercritical fluids, the use of polar modifiers, and the compatibility with various detectors. It also discusses the chromatographic equipment, column types, eluent composition, and detection methods. Additionally, the lecture explores planar chromatography, detailing the principles, stationary phases, eluents, and detection techniques used in this analytical method.