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US 5,858,178 AGranted
Process and device for preparing and/or extracting samples using a vaporizable agent at high temperature
OwnerWerner Lautenschlagerinventor
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Abstract
A process for preparing and/or extracting samples by heating them together with a solvent in a container under pressure, using a Soxhlet apparatus. The samples are dried by heating in a container; and the resultant vapors are drawn off to generate a vacuum in the container.
Claims30
A process for the extraction of samples by means of a volatile solvent, said process comprising the steps of:
- placing the sample in a sample holder in a container of a first device,
- heating the sample and the volatile solvent,
- whereby extraction takes place in the closed container under elevated pressure,
- wherein said process includes the steps of:
- transferring the sample with its sample holder into a second device, said second device comprising a container into which the sample holder also fits,
- drying the sample in the container of the second device, and
- drawing off the vapors so produced,
- whereby there is produced an underpressure in the container of the second device.
5 more elements
A device for the extraction of components from samples by means of a volatile solvent, in at least one pressure vessel, said device comprising:
- a pressure vessel which includes:
- a first chamber for receiving the volatile solvent,
- a sample container higher than the first chamber with a second chamber for receiving a sample, and
- at least one heating element of microwave absorbent material provided in the pressure vessel,
- wherein,
- the heating element is positioned within at least one of the first and second chambers.
3 more elements
Dependencies are inferred from the claim text.