Size Range: 0.1-340 um Sample Inflow Method: External peristaltic 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 No. of Photodetector: 76 Ultrasonic Power: 50 W Tank Capacity: 500 ml Circulating Flowrate: 1500 ml/min Small Volume Cell Capacity: 20 ml (optional) Small Volume Cell Agitating Speed: 120 rpm (optional) Voltage: 220V, 50/60 Hz Outer Dimension: 720*300*280mm