Experimental methods for the investigation of high-pressure phase equilibria are classified and described. A review of systems for which high-pressure phase-equilibrium data have been published between 1988 and 1993 is given. Vapor-liquid equilibria (VLE), liquid-liquid equilibria (LLE), vapor-liquid-liquid equilibria (VLLE), the solubility of high-boiling substances in supercritical fluids and the solubility of gases in liquids are included. For the systems investigated, the reference, the temperature and pressure range of the data, and the experimental method used for the measurements is given in 28 tables.