From the manufacturer:
One mixing head does it all with this sleek, modern and compact design vortex mixerThis 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 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.
Key Features & Benefits
Has rotary speed control that ranges from 0 to 3000 RPM
Made of durable, easy to clean ABS plastic material
The sturdy elastomer feet stabilize the unit and dampen vibration
