... )Accuracy of error≤ 1%(for standard sample D50)LaserImported semiconductor laser, 25,000 hours lifetimeSoftware running environmentWindows 2000, XPInterfaceUSB modePhotodetectors80(68 ... particle, foodstuff, scientific research, teaching, cement, ceramic, glass, chemical industry, military industry, soil, pigment, oil exploration, geological analysis, river silt and electronic ...