From the design of acid injection scheme to the impact of hydrogen sulphide in CCS scheme, knowledge of the phase behaviour of the hydrogen sulphide+carbon dioxide is essential. In this communication, new isothermal vapour-liquid equilibrium measurements for the binary system H2S-CO2 have been conducted at 258.41K, 273.15K, 293.47K and 313.02K in the pressure range from 1.0 to 5.5MPa. The experimental method used in this work is of the static-analytic type, taking advantage of two magnetic capillary samplers (Rolsi™, Armines’ Patent) developed in the CTP laboratory. This experimental method allows the sampling in both liquid and vapour phases and their analysis by GC. The data were obtained with uncertainties within ±0.02K, ±0.002MPa, and 0.006 for molar compositions. It is demonstrated that both the Peng-Robinson (PR) equation of state (classical or the P-PR78 version) or the Soave-Redlich-Kwong (SRK) equation of state combined with the classical mixing rule and appropriate binary interaction parameters were able to satisfactorily describe the phase behaviour of the H2S-CO2 binary systems.