I just put my DIY Stir Plate project to use tonight.Pictures?
Under $30 bucks from start to finish.
Fan 4.05 http://www.amazon.com/gp/product/B007JPNE7A/ref=ox_ya_os_product
Flask 14.56 http://www.amazon.com/gp/product/B001BLOHVK/ref=ox_ya_os_product
Stir Bar 7.33 http://www.amazon.com/gp/product/B002VBW5HW/ref=ox_ya_os_product
Rare earth magnets @ Wally World 4 each in a blister pack for 3.79
8X10 piece of acrylic at Lowes 1.79
I had the hardware and the 12VDC power supply on hand.
The acrylic is enough for two.
The fan with four magnets creates a good vortex in a 1L flask.