Dynalon® 303275-0002 Octagonal Magnetic Stir Bar, PTFE Coated, O.D. x Length: 3 x 13mm
This octagonal PTFE stir bar features an Alnico V magnetic core which is one of the most powerful permanent magnet alloys available. Made of PTFE®, the PTFE thickness accounts for 18% of the stir bar diameter. Stir bar should not be stored in a random mass or dropped on a hard surface, especially steel. Stir bar should be stored in pairs to maintain magnetic strength. Material: PTFE. Length: 13mm (1/2 inch). OD: 3mm (1/8 inch). 4/Pack; 3/Case. Dynalon® #: 303275-0002.