... Photocell: total90pcs Bettersize 2000 Intelligent Laser Particle Size Analyzer Specifications Size Range0.02μm-2000μmSample Adding MethodAutomatic ... operations such as water supply, dispersing, circulating, adjust concentration, test, drainage, cleaning, print, save and so on are all ... was made by human factor, improving the accuracy of test. Calibration accuracy: all instruments are passed after using ...