Buchi SpeedExtractor E-914, Operation Manual

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6 Operation
56
SpeedExtractor E-916 / E-916XL / E-914 Operation Manual
6.4.5 Example of an extraction method
Example: Extraction of 6×5 g sample in 10 mL extraction cells with acetone 50 % and DCM 50 %,
3×5 min at 80 °C and 100 bar.
Procedure:
• Connect the solvent reservoirs to the corre-
sponding ports:
a
: acetone,
b
: DCM
• Activate the extraction positions: EXTRAC-
TION  OCCUPIED POSITIONS  YES.
• Flush with solvent (optional): Insert empty
extraction cells in all positions. MENU 
FLUSH  FLUSH INTO WASTE: Flush with
solvent: 120 s; flow rate 50 mL/min; flush
with gas: 180 s; solvent:
a
: acetone 50 %;
b
: dichloromethane 50 %. Remove the
extraction cells.
• Preheat: EXTRACTION  PREHEAT: 80 °C,
OK, ON. The oven starts heating.
• Create method: EXTRACTION  EDIT
METHOD: Temperature 80 °C; pressure
100 bar; vial 60 mL; cell 10 mL; solvent
(see optional FLUSH); number of cycles 3;
cycles: hold 3 min, discharge 2 min, no vial
change (conditions apply for all 3 cycles);
flush with solvent 2 min; flush with gas
3 min.
• When the set temperature is reached, insert
samples and collection vials (60 mL) and
close the protective shield.
• START
6.4.6 Open an existing method
To open an existing method, proceed as follows:
• Select OPEN METHOD in the EXTRACTION menu.
All saved methods (up to 100) are stored in a
numbered table. Select the desired method and
press OK. The name of the method now appears in
the title of the main display.