Metrohm NIRS XDS RapidContent Analyzer - Manual (Page 43)

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These peak positions are not meant to be
traceable, as the wavelength calibration of
the instrument is done on an external
standard, traceable to NIST.
The internal wavelength standards are used
to maintain the external wavelength
registration by use of software adjustment
for any external effects on the instrument.
Select Wavelength Linearization from the
Diagnostics menu. The instrument will scan
the ceramic reference.
The results screen shown above is typical. Peak positions for the reference materials are located using
a peak-finding algorithm. These “found” peaks are compared to the nominals. Differences should be
no more than 0.4nm for any peak. Click “Yes” to send the linearization to the instrument.
After the linearization is successfully sent to the instrument,
this message confirms the transfer.
Click “OK” to proceed.
7.1.2 Reference Standardization
Reference Standardization is a method to provide a virtual 100% reflectance reference at each data
point, to serve as a true spectroscopic reference with no character attributable to the physical
reference used. This is important to achieve a high-quality spectrum on each instrument, and to