Stir Bar, Magnetic Stir Bar

Our Magnetic Stir Bars feature ALNICO V magnetic cores which are one of the most powerful permanent magnet alloys available. Offered in many shapes from round, octagonal, egg-shaped and more, these PTFE-coated Magnetic Stir Bars resist harsh chemicals and are resistant to scratching and high temperatures.

There are several measures that should be noticed to increase the life span of magnetic stir bars. First, stir bars should be stored in pairs to maintain magnetic strength. Stir bars should not be stored in a random mass or dropped on a hard surface especially steel. PTFE thickness accounts for 18% of stir bar diameter.


Spinbar® Stir Bars, Octagon Product #: 58947-106	Spinbar® Stir Bars, Polygon Product #: 58948-080	Spinbar® Stir Bars, Round Product #: 58947-150	Spinvane® Stir Bars Product #: 58949-270
from $4.46	from $4.23	from $5.46	from $9.77


Spin-Wedge® Stir Bars Product #: 58949-232	Spinbar® Stir Bars, Egg-Shaped Product #: 58949-002	Spinplus® Stir Bars Product #: 58947-820	PTFE Extra Large Polygonal Stirring Bars Product #: 304445-0001
from $8.33	from $10.06	from $13.01	from $92.05


Giant Spinbar® Stir Bars, Polygon Product #: 58948-972	PTFE Round Stirring Bars with Ring Around Center Product #: 303565	PTFE Octagonal Stirring Bars Product #: 303275-0001	Octagonal Stirring Bar Kit PTFE Product #: 303595
from $125.94	from $52.18sale $44.35	from $39.16sale $33.29	from $86.01sale $73.11


Octagonal Color-Coded Stirring Bars PTFE Product #: 304405	Micro Color-Coded Stirring Bars PTFE Product #: 304435	PTFE Stirring Bars at Disposable Prices Product #: 303664	Micro Stirring Bars PTFE Product #: 303475
from $50.18sale $42.65	from $47.97sale $40.77	from $256.90	from $45.87sale $38.99


Beaker Bar PTFE Product #: 303255	Triangular Stirring Bar PTFE Product #: 302806	Cross Head Magnetic Stir Bar PTFE Product #: 304495	PTFE Vane Bar Product #: 304465-0001
from $25.54sale $21.71	from $55.45sale $47.13	from $88.31sale $75.06	from $68.63


Spinbar® Stir Bars, Polygon Product #: 58948-072	Spinbar® Micro Stir Bars Product #: 58948-069	Spinbar® Stir Bars, Octagon, Color-Coded Product #: 58948-074	Spinbar® Magnetic Retrievers, Polyethylene, SCIENCEWARE* Product #: 58949-280
from $151.33	from $38.96	from $251.83	from $14.67

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Magnetic Stir Bar

Strict quality assurance from The Lab Depot for Magnetic Stir Bars and more than 750,000 other lab supplies means that you will always have confidence in your research and development or quality control results. After all, your laboratory testing procedures should always include using only the very best – whether magnetic stir bars, chemicals, glassware or very sophisticated instrumentation. Always look to The Lab Depot for value and for quality lab supplies.