This basic stir plate will dramatically increase the rate of yeast growth in your yeast starter flask. Just put the included magnetic stir bar into the flask, and place it on the plate. Spinning magnets in the plate cause the stir bar to rotate, agitating the yeast starter.
This unit has a 12 volt stir motor, which is controlled by a precision voltage regulator for easy speed adjustment. The RPMs of the drive motor are limited, so the motor will not “throw” the stir bar (unless you turn it up too high or move the starter once it has started), yet it provides enough to get a good vortex going. A low voltage, plug-in wall transformer provides power to the unit. The black plastic case dimensions are 6" x 4" x 2", large enough to accommodate a 2000ml flask (1000ml flask shown above). A Teflon coated 1"stir bar is included (longer bars are not recommended). A “keeper” magnet is also supplied to lock the stir bar in place while the yeast is pitched, so the stir bar won’t end up in your fermenter.
Unlike much more expensive laboratory units, this model is not designed to be used with corrosive chemicals, in wet areas, or with hot items, but it works just fine with yeast.