Choosing a magnetic stir bar (also known as a magnetic flea) that's the right shape and size for your task can make the stirring action more effective. Choosing the correct magnetic stir bar shape will ensure efficient mixing and reduce abrasion of the PTFE coating.
Use the guide below to choose the right magnetic stir bar
| name | Application field |
| Cylindrical stirring rod | Universal mixer; smooth stirring |
| ordinary stir bar | Similar to Cylindrical, but with more turbulent flow at low velocities. |
| Pivot Stirrer | Suitable for container bases that are slightly curved or uneven. The pivot allows the stir bar to adopt a great stirring position. |
| octahedral stirring rod | Similar to the pivot ring type, but more turbulent at low speeds. |
| spherical stirring rod | For stirring in test tubes or eccentric stirring |
| oval stirring rod | For round bottom flasks (aka boiling flasks) |
| cross stirring rod | Suitable for general purpose stirring but very stable to reduce "jumping" |
| cross head stirring rod | FOR TUBES OR OTHER CONTAINERS – Excellent for working in test tubes and beakers or flasks. |
| Triangular Stirring Rod | For dissolving solids or mixing sediments. The flat bottom scraper interferes with the action of the solid. |
