Abstract: Metal ebulliometer with internal fluid recirculation which is used to study the Vapor-Liquid Equilibrium without requiring the use of any auxiliary external elements. It provides the advantages of glass equipment and, as it is made of metal, it allows working in pressures higher than the atmospheric pressure—in a range of up to approximately 10 bars. This invention can be manufactured in either copper or stainless steel, for example. The result is the design of a continuous and dynamic equipment in which both phases (Vapor-Liquid) can be recirculated.