This sleek and modern designed vortex mixer is capable of meeting the mixing requirements of the most popular test tubes used in today’s lab without the need to swap out mixing head units.The innovative design of the vortex machine makes maximum use of the space available, providing holding slots for no less than six different sizes of tube and a standard assay plate, while the center pad area can be used for quick hand-held mixing of a vast range of tubes and vessels.Body made from durable ABS to resist most commonly used chemicals, and is easy to clean.Fixed variable speed rotary dial provides pre-set speed control (1000, 2000, 3000 rpm) during shaking mode.Stable elastomeric device feet, provide vibration dampening and prevent movement during operation Innovative head can be removed for cleaning purposes 3 Position Slider (top) intermittent, (middle) off, (bottom) continuous US Design Patent No. D787,085 US Utility Patent No. 9895670.