Buchi SpeedExtractor E-914, Operation Manual

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4 Description of function
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SpeedExtractor E-916 / E-916XL / E-914 Operation Manual
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 extrac-
tion 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 can be used for 6 samples with a maximum volume of 40 mL. The SpeedExtractor
E-916XL can be used for 6 samples with a volume of 60 mL. The SpeedExtractor E-914 can be 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 products,
snack foods, etc.), pharmaceuticals (extracting analytes from natural products, drugs from drug formula-
tions, pharmaceutical additives from feeds) and polymers (monomeric compounds, oligomers or additives).
4.2 Overview of the instrument
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