Dynalon Disposable Magnetic Stir Bars

Dynalon® high quality mangnetic stir bars are molded with strong magnets and are permanently coated with white PTFE plastic. Dynalon® magnetic stir bars feature ALNICO V magnetic cores which are one of the most powerful permanent magnet alloys available. Stir bars should not be stored in a random mass or dropped on a hard surface, especially steel. Magnetic stir bars should be stored in pairs to maintain magnetic strength. In general the PTFE coating around the magnet accounts for 18% of stir bar diameter.