Size Range: 0.02-2000 um Sample Inflow Method: Built-in automatic circulating and dispersing system Repeatability:<1% (D50) Accuracy:<1% (D50) Measuring Principle: Mie scattering theory Laser: optical fiber semiconductor laser Operation System: Win XP/ Win 7 Connection Port: USB or RS232 Number of Photodetector: 90 Testing Time: 2-3 minutes per test Ultrasonic Power: 50 W Tank Capacity: 500 ml Circulating Flowrate: 500-2500 ml / min Voltage: 220V, 50/60 Hz Outer Dimension: 800*500*418mm