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VWR International

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Magnetic Stirring Bars

Magnetic stirring bars provide effective stirring of samples via magnetic manipulation. Many models feature an octagonal shape with a central integrated pivot ring for optimal turbulence while stirring thanks to a greater surface area. The heavy-duty magnetic strips is one of the frequently used tools, strong enough to hold the solution. Commonly coated in Teflon to provide chemical inertness, occasionally glass will be the coating for use with most liquid alkali metals and alkali metal solutions in ammonia. Both of these coatings are inert and will not contaminate or react with the reaction solution.


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Description:   Multifaceted, interrupted profile that adds turbulence and improves stirring. Strong Alnico* magnets are encapsulated in autoclavable and inert PTFE can be used in temperatures up to 225degreesC (437degreesF).
Catalog Number: 74950-298
Supplier: VWR International



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Description:   PTFE* resin-coated, polygon shaped. 22.2Lx4.8Dmm.
Catalog Number: 58948-080
Supplier: VWR International



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Description:   VWR* Stir Bar magnetic, Spinbar, Shape: Giant Polygon, Colour: White, With center molded pivot ring, Minimizes contact between bar and vessel, Made of Alnico magnet, with FDA grade, USP Class VI Teflon PTFE, Durable, Autoclavable, Size: 152 x 19mm
Catalog Number: 76006-384
Supplier: VWR International



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Description:   Designed specifically for round bottom flasks and vessels. The PTFE* resin-coated, egg-shaped, magnetic stir bar fits the round bottom for uniform stirring without restriction. 19Lx9.5Dmm. For round-bottom flasks sized 10, 25, 50 and 100mL.
Catalog Number: 58949-006
Supplier: VWR International


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Description:   PTFE* resin-coated, round stir bars have removable pivot ring. 101.6Lx15.9Dmm.
Catalog Number: 58948-952
Supplier: VWR International



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Description:   Disposable magnetic stir bars eliminate potential for cross-contamination. Octagonal shape provides increased surface area and turbulence. PTFE* resin-coated.
Catalog Number: 58947-142
Supplier: VWR International



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