DT4C Technical Parameters: Max speed:4000rpm Max RCF:1880xg Max volume:8x15ml Noise:â?¤45dBA Timer:0~99min Net weight:6KG Dimension(HxDxW):275�?350�?270mm Power supply:AC 110v/220V 50/60HZ 2A Speed accuracy:�±20rpm Package:carton box Rotors for DT4C: Order No. Rotor No. Max Speed (rpm) Max Volume (ml) Max RCF(g) NO31701 Angle Rotor 4000 8�?15ml 1800xg NO31702 Angle Rotor 4000 6�?15ml 1880xg NO31703 Angle Rotor 4000 12�?10ml 1845xg NO31602 Angle Rotor 4000, 12�?5/7ml 1540xg NO32666 Angle Rotor 4000 8x10ml vacuum tube 1800xg 8x5ml vacuum tube adapter 1800 8x7ml vacuum tube adapter 1800