The Rareytec physical property laboratory has been in full operation since early 2024. We have implemented and validated a wide range of experimental techniques:

• Pure-component vapor pressure by direct measurement in a static cell and by the transpiration method
• Vapor-liquid equilibria (VLE) via headspace gas chromatography
• VLE of high-boiling mixtures by equilibrium saturation of an inert gas stream, with collection of all condensables in a cooling trap for weighing and further analysis (mixture transpiration)
• Entrainer evaluation for extractive distillation
• Gas solubilities and activity coefficients at infinite dilution via inert-gas stripping using component-specific detectors (NDIR, electrochemical)
• Gas solubility in static equipment; for CO₂ solubility, the gas partial pressure is measured in a thermostatted spectroscopic steel cell equipped with CaF₂ windows
• Liquid-liquid equilibria (LLE) of binary mixtures via cloud-point titration (turbidity sensor)