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Ion Chromatography
B.3 Manifold installation
Most IC manifolds will have two columns: a guard column and an analytical column. The
purpose of the guard column is to protect the analytical column. Any unwanted
particulates will be retained in the guard column. Some organic compounds, oils and
grease that may damage the packing material of the columns would be trapped in the
guard column before getting to the analytical column. Figure 70 shows an example of a
manifold diagram. Refer to the QuikChem method for specific installation requirements.
Figure 70 QuikChem manifold diagram for IC (example)
1 Reagent pump 9 Pump flow
2 Pump flow 10 Sample (orange)
3 To probe wash (green) G—Guard column
4 Regenerant (red) A—Guard column
5 DI water (gray) S—Guard column
6 To waste CM—Guard column
7 To port 6 of next valve or waster V1—Six port valve
8 Eluent pump V2—Ten port valve
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