... One-Click operation Photocell: total90pcs Bettersize 2000 Intelligent Laser Particle Size Analyzer Specifications Size Range0.02μm- ... 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 ...