ICS-90 Ion Chromatography System
5-6 Doc. 031851-05 12/04
5.1.2 Calibrating the Cell
Calibrate the cell every 6 months or after installing a new DS5 Detection
Stabilizer.
1. Open the ICS-90 Wellness panel in Chromeleon. To do this:
a. In the Chromeleon Browser, expand the Dionex Templates
folder, and then the Panels and the Wellness folder.
b. On the right pane of the Browser window, double-click
Dionex_ICS-90_wellness.pan.
2. Use an Allen wrench to remove the two screws securing the DS5 to
the ICS-90 component mounting panel (see Figure 5-2
). Save the
screws.
3. Pull the DS5 straight out from the component mounting panel to
unplug the cell from its electronics. Let the DS5 hang by the tubing.
4. Allow the conductivity to stabilize for 5 to 10 minutes.
5. Click the
Calibrate Offset command button under conductivity cell
(see Figure 5-1).
6. Line up the 9-pin connectors on the DS5 and the component
mounting panel and plug the DS5 back into the electronics. Replace
the mounting screws (removed in Step 2) and tighten.
7. Disconnect the pump outlet line from port P (2) on the injection
valve; connect the line directly to the cell inlet, using the yellow
PEEK backpressure tubing (P/N 049715).
8. Fill an eluent bottle with 1.0 mM KCl solution and connect it to the
eluent out line. Prime the pump (see Section B.13
) and then turn on
the pump.
9. Verify that there is a minimum of 7 MPa (1000 psi) of backpressure.
Items Needed Description
1.0 mM KCl solution Prepare by dissolving 0.07456 g of reagent-
grade KCl in one liter of 18-megohm DI
water.
Backpressure tubing to provide
at least 7 MPa (1000 psi)
Use 0.076-mm (0.003-in) ID yellow PEEK
tubing (P/N 049715).
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