Watch this video to learn more about the Vortex Genie® 2. The Vortex blends fluids quickly and thoroughly with a true vortex action that prevents spilling, even when tubes are uncapped. It is capable of ranges from gentle yet thorough shaking action to extreme vigorous vortexing depending on the speed and attachment chosen. A 3-position power switch lets you select continuous action, or "Touch On" control. With true “Hands-Free” operation lab operators can greatly increase efficiency. The operator completely controls the mixing of test tubes, beakers and flasks by varying the speed of the motor and/or the angle of contact and pressure against the mixing head.