48
BÜCHI
Fat Determination
B-820/B-821
5 Operation
Sample no: 5
p H2
5 5 k P a
Next number
p air
5 0 k P a
T oven
8 9 ° C
T inj.
2 2 0 ° C
Main menu
T FID
2 6 0 ° C
Wait until ready
spec.corr.
Name: cream cheese
Sample no: 5
p H2
5 5 k P a
Next number
p air
5 0 k P a
T oven
9 0 ° C
T inj.
2 2 0 ° C
Main menu
T FID
2 6 0 ° C
Ready injection 2
spec.corr.
Name: cream cheese
Figure 21b:
Fat determination report (short column)
without printout of the vials; internal
printout
Figure 21c:
Factor determination report (long column)
without printout of the vials; internal
printout
Determination with manual syringe
Sample No.
Entry of the sample number (from the sample weight table)
that should be determined as the next sample. is Confirm this
with “ENTER”; the cursor moves to the next row. The
corresponding sample identification (Name), the injection
number (here the second injection) and the sample-specific
determination mode (“spec.corr.”) will be shown in the display.
If the set temperatures and pressures have not been reached,
or as long as “Preheating” is running, the message “
Wait
until ready
” will be shown on the display. In this case, no
LED will be illuminated, or the “Running” LED will be on.
Procedure
If the set values are reached, the “READY” LED lights up,
and the message “
ready injection
” appears in the display
(in this case, the second injection). After carefully rinsing the
syringe with n-butanol, 2 ml of extract (upper phase) are now
injected into the injector port using the microliter syringe.
The temperature program starts automatically after the
injection. The corresponding temperature program runs
automatically in the background according to the determination
mode (see Chapter 3, Table 7). At the end of the determination,
the venting flap opens; the oven area will be conditioned in
order to prepare the system for the next determination. The
evaluation takes place automatically, and will be printed out
depending on the printer configuration (see Chapter 5.2.2).
The next manual injection can take place as soon as “Ready
for Injection” appears in the display (the “READY” LED lights
up).
