A fast method to equilibrate carbon dioxide with brine at high pressure and elevated temperature including solubility measurements

► We introduce a fast and easy methodology to equilibrate CO2 and brine in the litre range. ► Equilibration was reached in 60 min. ► This is an important step for CO2 storage studies and experiments. ► Solubility of CO2 in brine was measured using isothermal depressurization method. ► Comparing our solubility data with the literature shows its consistence.