Metrohm 761 Compact IC User Manual
Page 66
3 Operating tutorial
761 Compact IC
56
module is switched to the next position every 20 min and
conditioned in this way.
5 Condition system "
PrepMSM2.smt
"
⇒
Rinse IC system with eluent until the desired stability of the
baseline is achieved and the suppressor module is suffi-
ciently conditioned (at least 1 h).
6 Stop system "
PrepMSM2.smt
"
⇒
Select
Stop determination
of the
Control
menu in the system
window. Data recording and time program are stopped, high-
pressure pump and peristaltic pump keep running on.
7 Open and connect system "
s-03.smt
"
⇒
Select
Change
of the
System
menu in the system window.
Select the system file
s-03.smt
suited for the METROSEP An-
ion Dual 2 column in the folder
Suppressed
and click on
<Open>
. The system
PrepMSM2.smt
is closed, the system
s-03.smt
is opened and automatically connected.
8 Start system "
s-03.smt
"
⇒
Select
Start determination
of the
Control
menu in the system
window. High-pressure pump and peristaltic pump are
started, at the same time, a chromatogram window opens
where the baseline is recorded continuously. The status bar
of this window shows the message
Measure(Baseline)
, beside
this running time, analysis time, absolute conductivity and
number of measuring points per second are displayed. The
messages
Running [761 Compact IC]
and
Waiting for INJECT
[Suppressed]
appear in the
SYSTEM STATE
window
⇒
Let the system run for several minutes. If the system has
already been conditioned then a stable conductivity value of
approx. 14
µ
S/cm will be obtained after a few minutes.
⇒
Double-click the chromatogram or select
View all
of the
View
menu. The sensitivity is set automatically so that all measur-
ing points are visible.
This function is only available if the integration has been
started. In the present example the integration only starts
after a delay period
Delay = 2.6 min
.
⇒
Select the desired sensitivity using the cursor keys < > or
< >. In the chromatogram window the following display is
seen, for example: