The magnetic stir bar
A magnetic stir bar is a small utensil made of a magnet and covered with Teflon.
They come in different sizes. There are also oval-shaped ones.
A magnetic stir bar is used to stir a solution, proceeding as indicated:
- Place the magnetic stir bar in the container containing the solution to be stirred.
- Place the container on a magnetic stirrer, making sure that the magnetic stir bar is centered on the plate of the stirrer.
- Adjust the stirring speed to ensure effective stirring without turbulence.
- Once the stirring is over, retrieve the magnetic stir bar using a magnetized rod.
Illustration of an oval magnetic stir bar