This affordable single speed centrifuge is designed for blood separation in a small lab or physician office. Features Compact design 8.5 x 11 x 12.5 Weight of 18.5 lbs. Mechanical Timer 1 to 30 minutes Lid Safety Latch System will not run with lid open Brushless motor for smooth quiet operation with no routine maintenance Clear Lid Offers safe sample observation Nominal Speed 3150 RPM / 100 Custom tube holders designed to spin without cushions Capacity Six 6 15ml test tubes up to 17mm x 125mm Cool Running Motor housing and rotation chamber allows for cool operation under the heaviest workloads Includes Six 75 mm tube holders Six 100mm tube holders Six 125mm tube holders User Manual Warranty 1 Year Warranty 1 Each / Each