Southwest Science offers several product options for tube mixing applications. These include tube rollers that rotate tubes along their vertical axis while simultaneously rocking them. Tube revolver rotators that mix tunes in either a horizontal orientation or a vertical orientation, and even at an angle. Tube rotators that rotate vertical or tilted tubes in a large diameter axial motion around a center point. These products can be either fixed speed or variable speed, allowing a user to select a gentle mixing motion or a more aggressive mixing motion for samples.