This Thermo Scientific 4625 Titer Plate Shaker is in great condition, has been tested and is guaranteed to be fully functional. This item came from a local lab that closed down and was in use prior to removal. Shaker shows some aesthetic signs of use. We urge customers to view all photos as they show overall condition, included accessories and functionality. Please feel free to contact us with any questions. Solid-state, variable speed control from 40 to 1100rpm with a 0.12? (0.3cm) circular orbit Electronic timer can be set for continuous operation or timed shaking up to 5 min. (adjustable in 30-second increments) Independent start switch activates shaker for preset speed and time for repeatability in tests Automatic shutoff Platform has 0.38? (0.9cm) sides and holds from one to four 96-well standard or deep-well plates Two retaining springs and nonslip rubber mat hold plates securely