Metrohm NIRS Analyzer PRO - Manual (Page 49)

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2. Vision shows this selection box, marked
“Select ERC Correction File”.
The term “ERC” stands for “External
Reference Correction”, which is another
term for Reference Standardization.
Essentially, this is a method to
mathematically correct the instrument
reference to the equivalent of 100%
reflectance.
From the CD or DVD drive, highlight the
RSS1xxxx file, then click “Open”.
3. Vision prompts the user to place the 80%
reflectance standard (R801xxxx) from the
XC-1000 set over the sample window.
4. Click “OK” when the standard is in
position.
5. Vision takes a scan of the
internal instrument reference
path. This may take several
minutes. Some clicking of the
optical switch assembly will be
audible. Messages are shown at
the lower left corner of the
Vision screen indicating actions.
Click “OK” to have Vision plot
the file spectrum of the Certified
80% Reflectance Reference
standard, from the CD.