Thermo Scientific Dionex ICS Series Operator's Manual page 93

•
Incorrect reference wavelength selected
Select a different reference wavelength. For guidelines to follow when
selecting the reference wavelength, see
•
Bandwidth too wide
Select a bandwidth that provides the resolution required to achieve the desired
sensitivity. Narrow spectra peaks require narrow bandwidths. A wider
bandwidth reduces baseline noise, but may reduce peak height.
•
Reference bandwidth too wide
Select a bandwidth that provides the resolution required to achieve the desired
sensitivity. A wider bandwidth reduces baseline noise, but may increase the
chance that the sample absorbs in the reference bandwidth, thus causing
reduced sensitivity and peak height.
•
Cell flow is reversed
Check that the flow cell inlet tubing is routed through the heat exchanger (see
Figure 2-5) and is correctly connected to the inside front panel (see
Figure 5-1). Check that solvent flow is directed to the cell inlet and out the
cell outlet.
•
Semi-micro cell flow rate selected when standard cell is installed
For operation at less than 1.0 mL/min, install a semi-micro flow cell.
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4 • Troubleshooting
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