Buchi E-800, Operation Manual

Page: 67 / 88

Büchi Labortechnik AG
Performing an extraction | 7
Operation Manual UniversalExtractor E-800 67/88
Status Meaning
The extraction for this extraction position is aborted.
The extraction position is not heated anymore.
Navigation path
➔
u
Navigate to the [Home] menu via the navigation path.
u
Select the extraction position with the navigation control.
u
Tap the function [OK] on the function bar.
ð The status of the extraction position is changed.
7.3 Starting an extraction
CAUTION
Boiling retardation when using dichloromethane.
Boiling retardation can cause spills and lead to skin burns or a building fire.
u
Use boiling aids, e.g. PTFE boiling chips
NOTE
Boiling retardation
u
The beakers contain an integrated boiling surface.
ð
No boiling aids are needed.
Navigation path
➔
Precondition:
R
The instrument has been prepared. See Chapter 7.1 "Preparing the instrument
for an extraction", page 64
R The extraction positions are prepared. Chapter 7.2 "Preparing the extraction
positions", page 65
R
The sample is prepared (in the glass sample tube or in the paper thimbles).
u
Switch on the connected recirculating chiller or open the water tap.
u
Pull the chamber rack out of the instrument.
u
Place the prepared glass sample tube or paper thimble with the corresponding
holder in the extraction chamber. See Chapter 7.1.1 "Putting the glass sample
tube with frit in the extraction glass chamber", page 64
u
Push the chamber rack back in the instrument.
u
Set the optical sensor to the correct position.
—
For Soxhlet, Soxhlet Warm and Hot Extraction. See Chapter 7.1.3 "Adjusting the
optical sensor (Soxhlet, Soxhlet Warm and Hot Extraction)", page 65
— For Twisselmann Extraction . See Chapter 7.1.2 "Adjusting the optical sensor
(Twisselmann and Continuous Extraction only)", page 65