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Analytical Laboratories Applications

Supercritical Fluid Extraction (SFE)

Using the optimum speciality gas and equipment when performing Supercritical Fluid Extraction (SFE) will greatly improve the accuracy of your results.

SFE can be used to prepare analytical samples from complex solid samples by extracting the desired compounds, for example extracting components from soils or sediments. These extracted compounds can then be directly coupled to chromatographic separation systems such as Supercritical Fluid Chromatography, Gas Chromatography or HPLC.

The technique uses liquid Carbon Dioxide (in most cases) which is heated and pressurised to certain levels to become supercritical, in other words having properties of both a gas and a liquid. In its supercritical state, CO2 acts as a solvent and can dissolve or extract materials within a sample.

Our range of Experis® ultra high purity gases offers you the optimum gas for your SFE requirements. Don’t forget your choice of cylinder equipment also affects your analytical results. Our range includes high quality cylinder regulators, manifolds, valves and purge systems which will help to optimise the smooth operation and accuracy of your analysis.

The recommended gas for this application is listed below. If you require any additional advice on the right purity grade for your needs, please contact us.

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Gases

Carbon Dioxide UltraPure Liquid

Carbon Dioxide UltraPure Liquid with its low levels of impurities is ideal for Supercritical Fluid Chromatography.

Carbon Dioxide UltraPure Liquid with its low levels of impurities is ideal for Supercritical Fluid Chromatography.

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