Metrohm Vision Manual - Manual (Page 144)

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4. In the Open dialog box enter the directory with the NSAS files. Click on a file to highlight and
select it. Click on Open button.
5. From the Select Product dialog box choose the product to which you want to link the
calibration equation. Click on OK button.
6. From the Select Constituent dialog box choose the constituent to which you want to link the
equation. You can also create a new constituent by typing the name. Optionally enter the
units. Click on OK when done.
7. In the Calibration Equation dialog box optionally edit the calibration equation name and enter
a comment. Click on OK button.
5.7 Prediction and Equation Adjustment
Vision allows you to use either a validation set or an external prediction set in order to check the
performance of the calibration, and, if necessary, to correct bias and/or slope.
5.7.1 Prediction Procedure
1. Click on Mode/Quantitative Analysis/Predict to enter the prediction program. All your projects
will be displayed. Expand the project and product with the equation.
2. Select the equation by double-clicking on it. The equation icon will turn blue.
3. Select the constituent of the product to be predicted by double clicking on it. Select the
product spectra for prediction by clicking on each spectrum. You can also select a range of
spectra by clicking on the first spectrum in the range and Shift-clicking on the last one.
Make sure that the constituent and spectra come from the same product.
4. Click on Regression /Evaluate Samples to predict the selected samples.