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Generating Calibration Models
Partial Least Squares chemometric regression analysis is used to generate the calibration model for applications.
STEP 1. Collect 30-60 samples representative of the product composition distribution.
STEP 2. Collect the samples’ spectra on the FT-NIR instrument.
STEP 3. Analyse the samples by the appropriate reference methods. Collect repeatability data on the reference methods.
STEP 4. Combine the data and spectra in the PLSplus/IQ multivariate software.
STEP 5. Install the new calibration model file on the FT-NIR instrument.
STEP 6. Validate the new calibration model using samples not included in the data set used to make the model.
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NIR spectra loaded into PLSplus/IQ
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Calibration model plot of actual vs predicted
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