... plastic rotor, light, durable, reliable. Speed : 6000 rpm Instruction:Patent structure designing for silence running, super low working noise:4K & 6K: ≤48dB ... , light, durable, reliable.High intension PC lid, safety for high speed running.Speed : 6000 rpmcentrifuge force: 2000gRotor : 6×1.5ml round rotor ...