Instrument

Near Infra Red spectroscopy in combination with multivariate data analysis is used for the characterization of wood raw material.

A direct light NIR spectroscopy instrument for characterization of core chips in a particle board plant in northern Sweden.

Spectrum

Changes in the spectral amplitude correspond to changes in  chemical/physical composition of the raw material, representing for example moisture content, type of species, maturity and particle size.

A typical NIR spectrum of pine particles.

Data Analysis

With BoardModelTM, changes in wood chip quality are easily monitored. This plot shows a PLS score plot of NIR spectra of core chips from a particle board plant. One can see that four groups representing spectra of chips with different moisture content and particle size are well separated.

PLS plot of raw material with different particle- size and moisture content in a particle board plant.