Ramping feature slowly increases speed to set point for added safety. Independent LED display features speed and time. Timer will display elapsed time, or, when programmed to user-defined limit, will count down to zero and shut off unit. Audible alarm sounds when time reaches zero. Ideal for use in incubators, CO2 incubators, or cold rooms. Durable base is constructed of cast aluminum for extra stability. The triple eccentric drive features permanently lubricated ball bearings. The maintenance-free, brushless DC motor provides a long service life. 
 
Included tray can be used as a platform for mounting Erlenmeyer flask clamps, test tube racks, or securing microplates with the universal harness (sold separately). Tray features a nonskid rubber mat appropriate for holding petri dishes and cell culture flasks. Optional universal platform with adjustable rollers holds various vessel types such as volumetric flasks or separatory funnels. Universal platform measures 21.8Wx29.7Dcm (819/32x1123/32"). The rollers open to 21.6cm (81/2") deep. Universal harness (sold separately) features four elastic bands and is suitable for holding petri dishes and microplates.