
86 1100 Series DAD and MWD Reference Manual
3 Troubleshooting and Test Functions
Holmium Oxide Test
The holmium oxide test uses three characteristic absorbance maxima of the
built-in holmium oxide filter to verify wavelength accuracy (see also
“Wavelength Recalibration” on page 84). When the test is started, the 1-nm slit
is moved into the light path automatically. To eliminate effects due to
absorbing solvents, the test should be done with water in the flow cell.
Holmium Oxide Test Evaluation
The test is evaluated by the instrument, and the measured maxima are
displayed automatically. The test fails if one or more of the maxima lies
outside of the limits (see Figure 22).
Figure 21 Holmium Oxide Test
NOTE
See also “Declaration of Conformity for HOX2 Filter” on page 310.
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