Size Range: 0.1-150 um Test Mode: Gravitational Sedimentation, Centrifugal Sedimentation, Combination of both Repeatability: ＜4% (D50) Operation System: Windows XP Connection Port: USB or RS232 Testing Time: 3-15 minutes per test Centrifuge Speed: 750 rpm, 1500 rpm Outer Dimension: 440*360*350 mm Voltage: 220V, 50/60 HZ, 80W Net Weight: 35 kg