Metrohm Vision Manual - Manual (Page 131)

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3. From the Spectral Filtering Parameters choose the filter options. Only the spectra fitting these
criteria (detector cell type and wavelength range) will be let through sample selection. Click
on OK.
4. The sample selection algorithm will proceed with calculations and display results.
The right side of the screen contains complete information about the data set: a spreadsheet
with sample names and constituent values, a plot with spectra, and a histogram showing the
distribution of the constituent values. The results utilize a uniform color code to denote
spectra. The red color designates outliers, and light blue redundant samples. The dark blue
samples are the calibration set spectra. The left hand side of the screen shows the product
tree and the distribution of samples between the calibration, validation, and outliers sets.
Initially, all samples from the temporary set are placed in the calibration set. Double clicking
on any histogram bar will change the color of the corresponding spectra to yellow. It will also
highlight the corresponding spectra in the spreadsheet and on the product tree. The selected
spectra can be dragged from a given set and dropped into another. Also, the reference values
can be corrected in the spreadsheet.
5. Choose Select/Save Results to save the results of the sample selection. If the Validation or
Outlier set contained any spectra, you will have an option to save them for validation
purposes.
Performing combined sample selection
1. Follow the procedure for spectral data type sample selection.
2. After saving the results, choose Select/Lab Data Direct.
You will enter the Lab Data sample selection with the spectra already distributed between