NIR Gallery

Are NIR results reliable?
“The quality of the NIR results reflects the quality of the baseline chemical used”
NIR analysis is a form of chemometrics in which classical chemistry is statistically linked to the physical behaviour of the material upon irradiation by a light beam.
To obtain reliable data, alongside the quantity of the baseline chemical, there is also a vital role for the algorithms employed to “recognise” a sample, compared to those present in the calibration curve.
These algorithms are the Mahalanobis distance (NH-GH).

Our laboratory uses:
NH < 0.6 to avoid similar/redundant spectra and GH < 1 to avoid anomalous spectra. The Student’s T-test for an accurate prediction of an individual parameter is < 2.5.