Determining concentration, size and type of particles in dispersion involves irradiating surface of dispersion with light, and evaluating intensity of light reflected from measuring surface

摘要

Determining the concentration, size and type of particles in a dispersion (3) involves irradiating the surface of the dispersion with light having one or more wavelengths in a region limiting a measuring surface (4); evaluating the intensity of the light reflected from the measuring surface for each wavelength; and determining the concentration, size and type of particles in the dispersion from the intensity of light at different wavelengths. Preferred Features: Measurement of the scattering intensities takes place only on the surface of the dispersion without an optical window. Light in the wavelength region of 180-2000 nm is used.