The Vortex-Genie® 2 mixer blends fluids quickly and thoroughly with a true vortex action that prevents spilling, even when tubes must be uncapped. It is capable of ranges from gentle yet thorough shaking action to extremely vigorous vortexing depending on the attachment chosen. The operator completely controls the mix 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.