CP-3800 GC Operator’s Manual
141
The second adjustments page is only accessible if detector EFC is installed.
ACTIVE
METHOD
EDIT
METHOD
CTRL
RUN
TIME
END
TIME
Method 1
Method 1
0.00
20.00
Make-up Flow (ml/min): 25
FRONT ECD ADJUSTMENTS, Page 2 of 2
Make-up Flow (ml/min)
25
ECD
Operation
Observe the following procedures when operating with an ECD.
Column and
Septum
Bleed
The ECD can become contaminated by chemicals that bleed from columns
and septa. Such column and/or septum bleed can seriously decrease the
ECD cell current which may result in an unacceptable increase in the
frequency/output signal. To prevent such contamination, condition all
columns and septa before you use them with the ECD.
Column
Conditioning
NEVER condition a column while it is connected to the ECD detector.
Instead, remove the column from the detector, cap the ECD column fitting
with a nut, and a no-hole ferrule. Maintain makeup gas flow to the detector
to keep the ECD cell clean. Condition new columns for a minimum of 10
hours at 40
°
C below the maximum temperature of the column stationary
phase, or as directed by the column supplier. Complete the column
conditioning phase before you connect the column to the ECD.
Septa
Conditioning
Place septa in a clean glass beaker or dish and bake the septa in the GC
oven at 150
°
C for 30 minutes. Complete the septa conditioning phase
before you place the septa in the injector.
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