For a given temperature and composition, the pressure at which the first bubble of gas appears is called the bubble point pressure. Operating in a two-phase regime is usually undesired and can be avoided if the bubble point pressure is known. The amount of gas released from the aqueous solution upon pressure or temperature shifts impacts the aqueous chemistry and thermophysical properties of the geothermal mixture. For instance, the release of CO2 from the brine increases the pH, which promotes scaling. Changes in the gas-liquid-ratio (GLR) in a two-phase system alter the fluid density, specific heat, viscosity, and thermal conductivity, all of them important for the design of relevant equipment within the geothermal plant (e.g., pumps, heat exchangers) .