This is a brewing tool to take your home brewery to next level and it's fun to use.
Many home brewers don't pitch nearly enough yeast. A stir plate helps you culture higher cell counts of healthy yeast for quicker fermentation, lower risk of infections and better tasting beer. All in less time than it takes to make a conventional yeast starter. This unit has two powerful NdFeB button magnets in the 12 VDC 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, 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 2000 mL flask (as shown). A Teflon coated 1" x 5/16" stir bar is included. 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!
(Please note: Erlenmeyer flasks, as shown in the product picture, are sold separately).