BÜCHI Labortechnik AG Product description | 3
Operation Manual UniversalExtractor E-800 15/88
3.1.4 Hot Extraction (with chamber heater)
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 magnetic valve is closed, the solvent is collected up to the level
sensor.
The analyte is extracted.
The solvent is heated in the extraction chamber, vapor rises up to the
condenser, condenses and drops back 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.
This flushes traces of analyte into the beaker.
Step 3 drying
The solvent is heated, vapor rises up to the condenser, condenses
and flows into tank.
The analyte remains in the beaker.
3.1.5 Soxhlet Warm Extraction (with chamber heater)
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.
This flushes traces of analyte into the beaker.
Step 3 drying
The solvent is heated, vapor rises up to the condenser, condenses
and flows into tank.
The analyte remains in the beaker.
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