Suitable for solubility testing of various gas components in liquid phases, yielding solubility curves under different temperature/pressure conditions, featuring high-precision temperature control and measurement.

The fully automated SL2100 gas-liquid solubility tester, developed based on the isochoric saturation method, can realize automatic measurement of gas-liquid solubility. It features high-precision temperature control, temperature measurement, and pressure measurement. Combined with automated software, it can obtain solubility curves under different temperature/pressure conditions. It is suitable for testing the solubility of various gas components (such as CO₂, ammonia gas, refrigerants, etc.) in liquid phases.

The isochoric saturation method, a type of static method, involves injecting a liquid solvent into a closed vacuum equilibrium kettle. After the temperature is kept constant, a certain amount of gas solute is added to the equilibrium kettle. The stirrer is turned on, and after sufficient mixing and dissolution, the temperature and pressure stabilize, indicating that equilibrium is reached. Then, the temperature and pressure of the system are measured. The volumes of the gas chamber system and the equilibrium kettle system are calibrated in advance, and the solubility is measured by calculating the reduction in the mass of the gas phase. Since no sampling analysis is performed, the isochoric saturation method is more suitable for measuring systems where the saturated vapor pressure of the solvent is relatively low. This method has a simple device, good system tightness, and easy operation, overcoming the difficulties and inaccuracies caused by sampling analysis.

Key Features

l High temperature control precision: The temperature fluctuation is less than ±0.05 ℃, ensuring high accuracy of measurement results;

l Accurate pressure measurement: Adopting a high-precision pressure sensor with an accuracy of less than 0.1% FS;

l Wide temperature measurement range: Suitable for -30~100 ℃, and can be extended to higher temperatures;

l Wide pressure measurement range: The pressure range is 0~5 MPa, and higher pressures can be customized;

l Fast equilibrium speed: Equipped with a built-in stirring system with adjustable rotation speed, which can help the system reach equilibrium quickly;

l Fully automated control: Independently developed measurement software can obtain solubility curves under different conditions, realizing automatic temperature control, automatic temperature measurement, automatic pressure measurement, and data processing.