BUCHI Extraction System B-811 LSV - Manual (Page 18)

4 Description of function
18 B-811 Operation Manual, Version G
4 Description of function
This chapter explains the basic principle of the instrument, shows how it is structured and gives a
functional description of the assemblies.
4 .1 Instrument function
There are several important components integrated into the B-811 extraction system which allow you
to use the instrument for many kinds of applications in the area of solid-liquid extraction.
The solvent and extract only come in contact with glass and PTFE. This allows the instrument to be 1.
used for applications in the area of residue analysis (e.g. for environmental analysis applications).
The extraction and drying steps can be carried out under inert gas. This prevents the oxidation of
2.
the extract and the efficient and soft reduction of the extract.
With the adjustable optical sensor the amount of solvent can be minimized depending on the
3.
sample volume.
Each extraction position has 2 heating elements. Therefore, all 4 integrated extraction methods can
4.
be carried out without having to exchange or disassemble any glass part.
The operation panel makes programming and storing the extraction parameters easy. Up to 50
programs with up to 9 steps each can be stored. An extraction method can be selected for each
program. The integrated front shield protects from glass breakage.
It reduces simultaneously external heat loss and therefore increases the evaporating capacity.
NOTE
All positions are run with the same extraction type.