A magnetic stir plate is a great investment to help improve the quality of your yeast starters. Aeration is an important factor in making a yeast starter, and without a stir plate you'll need to pick up and swirl your starter by hand as often as possible. The stir plate is a simple solution that will continuously aerate your starter, leading to higher numbers of viable yeast.
This compact stir plate works with Erlenmeyer flasks up to 5000mL in size. Depending on the volume of your yeast starter, you can use the adjustment knob to dial in the speed of the stir bar. We recommend using just enough power to keep yeast in suspension, a full vortex isn't really necessary.
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