BUCHI Extraction System B-811 LSV - Manual (Page 37)

6 Operation
37 B-811 Operation Manual, Version G
Function key Display Description
Display H: MIN blinks Select the rinse time (0 to 99:99 h) using the / keys
The only stop criterion used for STEP 2 is the rinse time
Display STEP 3 blinks (STEP 3 = Drying)
Display HEATING
blinks
Select the heating level (1 - 20) using the / keys
Select level 4 for petroleum ether 40/60
Display H: MIN blinks Select the drying time (0 to 99:99 h) using the / keys
The only stop criterion used for STEP 3 is the drying time
In case of oxygen-sensitive analytes, the gas supply must be
activated by pressing the INERT GAS key
The inert gas valve is automatically opened up while the step
starts
SELECT No display blinks The entered program is stored as program 0
To store this program under a different program number, please
see chapter 6.7
6 .4 Soxhlet Warm Mode - programming example
Program description:
This program is the same as the program for the Soxhlet Standard mode, except that the extraction
chambers are heated up. This makes it possible to reduce the extraction time, especially when using
solvents with high boiling points. Solvent: toluene, for other heating levels see chapter 6.11.
Function key Display Description
SELECT The Mode display
blinks
Select the Soxhlet Warm Mode using the / keys
Display STEP 1 blinks (STEP 1 = Extraction)
Display HEATING
blinks
(The symbol for the upper heating element lights up)
Select the heating level (1 - 10) using the / keys
Select level 6 for toluene
Display HEATING
blinks
(The symbol for the lower heating element lights up)
Select the heating level (1 - 20) using the / keys
Select level 13 for toluene
Display CYCLES
blinks
Select the number of cycles using the / keys
If the number of cycles = 0 is entered, then the extraction is
finished when the extraction time has expired
Display H: MIN blinks Select the extraction time (0 - 99:99 h) using the / keys
If no time is entered, then the extraction is finished when all posi-
tions have completed the set number of cycles
If both parameters are entered (time and number of cycles), then
both criteria must be fulfilled before the instrument switches to
the next step