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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:   Disposable magnetic stir bar eliminates potential for cross-contamination. Octagonal shape with a molded pivot ring provides increased surface area and turbulence. PTFE* resin-coated. 12.7Lx3.1dia. mm.
Catalog Number: 58947-140
Supplier: VWR International


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Description:   Rare Earth, Molded in pure, FDA approved, PTFE or polypropylene. Autoclavable. 10mm diameter x 250mm length
Catalog Number: 89026-260
Supplier: VWR International



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Description:   These PTFE* resin-coated, star-shaped, magnetic stir bars create a deep vortex at relatively slow speeds. They fit exactly the inside diameter of the beakers indicated. For 100mL beaker size.
Catalog Number: 58949-028
Supplier: VWR International



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Description:   Removable stabilizing ring centers the octagon stirring bar (included with ring) in container. Creates a deep vortex without splashing or chattering. Resists spinout. PTFE* resin-coated. 57.2mm ring OD. 50.8Lx7.9Dmm.
Catalog Number: 58949-022
Supplier: VWR International



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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: 74950-280
Supplier: VWR International



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Description:   PTFE, Rare Earth, Elliptical, 70mm Length x 28mm Diameter
Catalog Number: 89030-558
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. 31.8Lx15.9Dmm. For round-bottom flasks sized 300 and 500mL.
Catalog Number: 58949-200
Supplier: VWR International



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Description:   PTFE* resin-coated, octagon-shaped stirring bars with molded-on pivot ring. 76.2Lx12.7Dmm.
Catalog Number: 58948-193
Supplier: VWR International


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Catalog Number: 76461-642
Supplier: VWR International



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Description:   Designed to plow up sediment at bottom of vessel and mix it into a solution for thorough dispersion. Sharply angled, broad face of bar provides a strong mixing action; use with viscous solutions. PTFE* resin-coated. 12.7Lx50.8Dmm.
Catalog Number: 58949-265
Supplier: VWR International



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Description:   12 PTFE* resin-coated, octagonal stir bars. Packaged in a plastic, compartmented Spinbox*. Two each of: 12.7x7.9mm, 15.9x7.9mm, 25.4x9.5mm, 38.1x9.5mm, 50.8x9.5mm and 63.5x9.5mm.
Catalog Number: 58948-070
Supplier: VWR International



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Description:   VWR* Stir Bar magnetic, Spinbar, Shape: 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, ISO 9001:2008, Autoclavable, Size: 20x6mm
Catalog Number: 76006-388
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. 9.5Lx4.8Dmm. For round-bottom flasks sized 10mL.
Catalog Number: 58949-012
Supplier: VWR International


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Description:   Convenient blister packs of popular PTFE* resin-coated, octagon, Spinbar magnetic stir bars. Each pack contains one size. 12.7Lx7.9Dmm.
Catalog Number: 58949-036
Supplier: VWR International



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Certificate Certificates    
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Description:   VWR* Stirbar/Spinbar, Magnetic, Micro Flea, Alnico Magnet, FDA Grade, USP Class VI, Material: Teflon PTFE, Durable, Inert, ISO 9001:2008, Dimensions: 3 X 3Mm (0.118 X 0.118in), Autoclavable, Color: White
Catalog Number: 76001-874
Supplier: VWR International



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Description:   PTFE* resin-coated, polygon shaped. 15.9Lx7.9Dmm.
Catalog Number: 58948-984
Supplier: VWR International



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