The settling behavior of liquid-liquid dispersions at ambient temperature and pressure is well investigated. However, little is known about the settling behavior of those systems at high pressure and high temperature. In this work, a novel stainless steel settling cell is presented, enabling investigations on liquid-liquid settling behavior at high pressures up to 130 bar. The settling behavior of a promising CO(2)hydrogenation reaction system is investigated by sequentially determining influences of dissolved CO2, side components, and temperature.