2" Magnetic Stir Bar

The 2" Magnetic Stir Bar is a reusable brewing accessory designed for large yeast starter preparation and magnetic stir plate fermentation workflows. Sized for 2000–5000 mL Erlenmeyer flasks, this PTFE-coated stir bar helps maintain continuous agitation during yeast propagation to support oxygen exposure and healthy yeast growth. Commonly used for lagers, high-gravity ales, and larger brewing batches, the stir bar helps keep yeast suspended within starter wort while improving circulation during propagation. Compatible with the Wort Whipper Stir Plate and other standard magnetic stir plates, this durable stir bar supports advanced yeast management and fermentation preparation workflows in homebrewing setups.