The versatile, end-over-end tube roller and Rotators are designed for mixing samples in both a vertical and horizontal plane. They can be placed in an environment temperature ranges from 5 to 40° and the rotation speed is adjustable, from 0 to 99 rpm. Tube Rollers, Rotators and Rocker are designed to deliver salient performance, accuracy, and reproducible results for all your application needs. - Rocking and rolling motions for complete mixing - LCD display the speed and time - Speed range of 10-70 rpm - Six roller design with small footprint and easy clean