METHOD FOR DETERMINING THE PARTICLE SIZE OF A MATERIAL

摘要

In a method for determining the particle size of a material, the transmittance or absorbance of a sample of the material being placed in a space or region is measured at a number of wavelengths in the near-infrared range. The particle size is determined by comparing the set of measurement values having been obtained with corresponding data sets for a material with a known particle size or by insertion in an algorithm having been produced on the basis of data sets for a material with a known particle size.