Buchi E-800, Operation Manual

Page: 18 / 88

3 | Product description
Büchi Labortechnik AG
18/88 Operation Manual UniversalExtractor E-800
3.1.5 Soxhlet Warm Extraction (with extraction glass chamber universal)
Step 1 extraction
— The sample is located in the extraction chamber.
— The beaker contains the solvent.
—
The solvent is heated, vapor rises up to the condenser, condenses
and drops into the extraction chamber with the sample.
— The solvent in the extraction chamber is heated.
—
The magnetic valve is closed, the solvent is collected up to the level
sensor and extracts the analyte.
— When the optical sensor is reached, the magnetic valve opens and
the solvent containing the analyte flows back into the beaker.
Step 2 rinsing
—
The solvent is heated, vapor rises up to the condenser, condenses
and drops into the extraction chamber with the sample.
— The magnetic valve is open, the solvent flows back into beaker, the
solvent is not collected.
Step 3 drying
— The solvent is heated, vapor rises up to the condenser, condenses
and flows into tank.
— The analyte remains in the beaker.
3.1.6 Twisselmann Extraction (with extraction glass chamber universal)
Step 1 extraction
—
The sample is located in the extraction chamber.
— The beaker contains the solvent.
—
The magnetic valve is closed, the solvent is collected in the
extraction chamber. The solvent is heated, vapor rises up to the
condenser, condenses, and drops back through the sample into the
extraction chamber.
Step 2 rinsing
— The solvent is heated, vapor rises up to the condenser, condenses
and drops into the extraction chamber with the sample.
—
The magnetic valve is open, the solvent flows back into beaker, the
solvent is not collected.
Step 2 drying
— The solvent is heated, vapor rises up around the sample to the
condenser, condenses and flows into the tank bottle.
— The analyte remains in the beaker.
3.1.7 Description of the analyte protection
The Analyte Protection protects the analyte from overheating.