Filter Test - Agilent Technologies 1220 Infinity II LC User Manual

9
Test Functions and Calibration
Diode Array Detector (DAD)
Figure 51
For details refer to the individual tests on the following pages.

Filter Test

The filter test checks the correct operation of the filter assembly. When the
test is started, the holmium oxide filter is moved into position. During filter
movement, the absorbance signal is monitored. As the edge of the filter passes
through the light path, an absorbance maximum is seen. Once the filter is in
position, the absorbance maximum (of holmium oxide) is determined. Finally,
the filter is moved out of the light path. During movement, an additional
absorbance maximum is expected as the edge of the filter passes through the
light path. The test passes successfully, if the two maxima resulting from the
edge of the filter assembly (during filter movement) are seen, and the
absorbance maximum of holmium oxide is within the limits.
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Self-test Results (report)
1220 Infinity II LC System User Manual