... non-metallic powders, such as calcium carbonate heavy, calcium carbonate light, talcum, kaolin, graphite, wollastonite, brucite, barite, mica powder, bentonite, diatomite ... process and control system are accurate and reliable. Specially designed light receiver array with 90 pcs detectors, forward 80, backward10, to ... ratio of the instrument. Bettersize 2000 Intelligent Laser Particle Size Analyzer