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. - Compact and firm designed, simple operation, LED display time and speed. - Two types selectable - rolling type and rolling & swinging type. Continuous working mode, safe and stable. - With stable performance motor, operation speed adjustable, max. speed to 80rpm. Low noise, long using life. - Can compatible with different size of tubes. Large range of application.