The Story
The 2-inch Magnetic Stir Bar is designed for homebrewers who need reliable agitation when preparing large yeast starters. Sized for 2000 to 5000 mL flasks, it creates steady movement that improves oxygen exposure and nutrient distribution, helping yeast build strength before fermentation. This makes it especially useful for lagers, high-gravity ales, and larger or split batches that require higher cell counts.
The stir bar provides consistent mixing performance by maintaining smooth rotation on compatible stir plates. Its PTFE coating supports low-friction movement and resists sticking, allowing yeast to remain in suspension throughout the starter process. This coating also simplifies cleaning and helps ensure long-term durability during repeated brewing cycles.
Constructed with a solid magnetic core and PTFE exterior, the stir bar is engineered to work with the Wort Whipper Stir Plate and most other standard homebrewing stir plates. The 2-inch length offers enough torque and stability for larger Erlenmeyer flasks while remaining easy to handle during cleaning and sanitizing.
To use the stir bar, sanitize it thoroughly, place it in a cleaned flask containing wort for the starter, and position the flask on a stir plate. Adjust the speed until the stir bar rotates smoothly and forms a controlled vortex. This steady aeration supports rapid yeast growth and helps produce a healthier pitch for fermentation.
Built for repeated use in demanding starter sizes, the 2-inch Magnetic Stir Bar delivers dependable mixing, straightforward maintenance, and compatibility with common homebrewing equipment. Its performance helps ensure strong yeast vitality and consistent fermentation results.
Description
The 2-inch Magnetic Stir Bar is designed for homebrewers who need reliable agitation when preparing large yeast starters. Sized for 2000 to 5000 mL flasks, it creates steady movement that improves oxygen exposure and nutrient distribution, helping yeast build strength before fermentation. This makes it especially useful for lagers, high-gravity ales, and larger or split batches that require higher cell counts.
The stir bar provides consistent mixing performance by maintaining smooth rotation on compatible stir plates. Its PTFE coating supports low-friction movement and resists sticking, allowing yeast to remain in suspension throughout the starter process. This coating also simplifies cleaning and helps ensure long-term durability during repeated brewing cycles.
Constructed with a solid magnetic core and PTFE exterior, the stir bar is engineered to work with the Wort Whipper Stir Plate and most other standard homebrewing stir plates. The 2-inch length offers enough torque and stability for larger Erlenmeyer flasks while remaining easy to handle during cleaning and sanitizing.
To use the stir bar, sanitize it thoroughly, place it in a cleaned flask containing wort for the starter, and position the flask on a stir plate. Adjust the speed until the stir bar rotates smoothly and forms a controlled vortex. This steady aeration supports rapid yeast growth and helps produce a healthier pitch for fermentation.
Built for repeated use in demanding starter sizes, the 2-inch Magnetic Stir Bar delivers dependable mixing, straightforward maintenance, and compatibility with common homebrewing equipment. Its performance helps ensure strong yeast vitality and consistent fermentation results.



















