Metrohm NIRS XDS Process Analyzer – MicroBundle - Manual (Page 71)

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Vision provides a split-screen display that details instrument performance. The lower right quadrant
shows tabulated data. Double-click to enlarge this screen to full size. When the test is complete, tabs
shows results.
10.3 Interactance Immersion Tests
The Interactance Immersion Probe is quite similar to the
Interactance Reflectance Probe. It uses the same type of fiber
bundle with concentric light paths.
The only difference is the “lens barrel” which directs the light in a
different geometry.
Because this is the only difference, many of the adjustments and tests are the same as those done for
the Interactance Reflectance Probe.
10.3.1 Wavelength Linearization, Interactance Immersion
The first test to be run is Wavelength Linearization. This provides initial wavelength locations for the
sample spectrum, prior to final wavelength calibration. Wavelength Linearization is performed on the
internal reference fiber located in the XDS Process enclosure.
Wavelength Linearization uses internal wavelength materials to determine a set of internal, arbitrary
peak positions that the instrument will use to maintain repeatability of wavelength response.