... Size Range: 0.02um-2000um Simple and easy One-Click operation Photocell: total90pcs Bettersize 2000 Intelligent Laser Particle Size ... non-metallic powders, such as calcium carbonate heavy, calcium carbonate light, talcum, kaolin, graphite, wollastonite, brucite, barite, mica ... and control system are accurate and reliable. Specially designed light receiver array with 90 pcs detectors, forward76, lateral ...