Measuring Super Critical Fluids

A fluid like carbon dioxide is difficult to measure as it shifts towards the inter-phase stage between being a liquid and a gas. Bronkhorst (UK) mini CORI-FLOW instruments offer a specific solution. In part this is because of the instruments independence to physical properties provide a true mass flow measurement, but also because they are pre-designed to directly control both  valves and pumps. The true mass flow of the molecules is measured, regardless of whether the fluid is in gas phase, in liquid phase or indeed somewhere in between.

Supercritical carbon dioxide is seen as a promising green solvent due to its non-toxic nature and as a readily available resource often generated as a by-product from other industrial processes. Furthermore, separation of the reaction components from the starting material is much simpler than with traditional organic solvents.

Bronkhorst also have experience with super critical Carbon Dioxide in other areas of industry including decaffeination, active ingredient extraction, the sterilisation of medical materials, supercritical fluid deposition, microelectronics solvent processes, the faming of polymers, chemical reaction enhancement and super-critical gas chromatography .