Instrument: Laser Diffraction Particle Size Analyzer
Laser diffraction is particle sizing technique for materials ranging from hundreds of nanometers up to several millimeters in size. Laser diffraction measures particle size distributions by measuring the angular variation in intensity of light scattered as a laser beam passes through a dispersed particulate sample. One example is the Beckman Coulter LS200.
A Beckman model LS-200 was used to to measure the distribution of sediment grain sizes. See the description from the manufacturer.