BUCHI SpeedExtractor E-916 - Manual (Page 23)

4 Description of function
23 SpeedExtractor E-916/E-914 Operation Manual, Version D
4 Description of function
This chapter explains the basic principle of the SpeedExtractor E-916/E-914 and provides a functional
description of the assemblies.
4.1 Functional principle
The SpeedExtractor E-916/E-914 is an automated instrument for parallel extraction of primarily organic
compounds from a variety of solid or semi-solid samples. Conventional methodologies are accelerated
by using a solvent at elevated temperatures. In order to maintain the solvent in a liquid state during the
extraction process, the solvent inside the extraction cell is put under pressure. Generally, to achieve
high recoveries multiple extraction cycles are applied. Once the extraction step is finished, the extracts
are cooled down in a cooling unit and flushed into collection vials which then can easily be evaporated
in parallel using the Multivapor™ P-6 or Syncore Analyst R-12. Hence the whole process workflow can
be performed in parallel with up to 6 samples.
The SpeedExtractor E-916 accommodates 6 samples with a maximum volume of 40 mL, whereas the
E-914 can be used for up to 4 samples with a limited maximum volume of 120 mL. The total volume of
the collection recipients are from 60 mL vials to 240 mL bottles. Using a specially designed rack, it is
also possible to use large volume round bottom flasks to collect the extracts.
Typical applications are carried out in environmental substances (environmental pollutants such as those
listed in EPA Method 3545A for instance), food (recovery of fat from meat, oil seeds, feeds, dairy prod-
ucts, snack foods, etc.), pharmaceuticals (extracting analytes from natural products, drugs from drug
formulations, pharmaceutical additives from feeds) and polymers (monomeric compounds, oligomers
or additives).
4.2 Overview of the instrument
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