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ICS-2100 Ion Chromatography System
184 Doc. 065291-01 3/09
5. Verify that the suppressor and the auxiliary electrolytic device (if
installed) are off.
6. Verify that the
Automatically turn on with pump option is not
selected on the touch screen
SUPPRESSOR page (see Section B.9).
Disabling this option lets you turn on the pump, without
automatically turning on the suppressor.
7. Set the pump flow rate to the rate required for the application.
8. Turn on the pump.
9. Verify that the system backpressure is between 14 and 16 MPa (2000
and 2300 psi). If necessary, adjust the pressure by adding or removing
backpressure tubing.
10. Set the
EGC-1 and EGC-2 concentrations to the values required for
your application. For example, for a 3.5 mM K
2
CO
3
/1.0 mM KHCO
3
mixture, set the
EGC-1 concentration to 3.5 mM and the EGC-2
concentration to 1.0 mM.
11. Turn on the
EGC-1 and EGC-2 currents.
12. Run at the selected settings until the mixer is filled with the eluent
mixture. At a flow rate of 1 mL/min it will take about 45 minutes to
fill the 4-mm mixer and about 15 minutes to fill the 2-mm mixer.
NOTE The void volume of the 4-mm mixer is about
16 mL. The void volume of the 2-mm mixer is
about 5 mL.
13. Turn off the EGC-1 and EGC-2 currents.
14. Turn off the pump.
15. Remove the backpressure coil from the
TO INJ VALVE IN - P/ELUENT
OUT
line and the mixer inlet. Reconnect the two lines.
16. Disconnect the mixer outlet from the
TO SRS/AES REGEN OUT line
and remove the 10-32 to 1/4-28 coupler.
To avoid damaging the suppressor and auxiliary electrolytic device (if
installed), always turn them off before filling the mixer. The pump flow
is on during filling; however, no flow reaches the suppressor or
auxiliary electrolytic device.