Metrohm NIRS XDS MasterLab Analyzer - Manual (Page 77)

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These peak positions are not meant to be
traceable, as the true wavelength calibration
of the instrument is done on an external
standard, traceable to NIST.
The internal wavelength materials 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 correct instrument 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.
This operation will be performed twice, once in each
direction of the grating scan.
As the second scan is completed, click on the “OK” button in each dialog box. Vision will not allow a
bad Wavelength Linearization to be downloaded.