Description
BOLA dumbbell magnetic stirring bars with PTFE coating are specialised laboratory stirrers built for reliable mixing where a dumbbell geometry improves contact and guidance. Overall length is approximately 37 mm, and the sliding discs measure about 20 mm in diameter, creating the characteristic hantel-style profile that helps the bar track smoothly under magnetic drive. An Alnico 5 magnetic core is fully encapsulated in polytetrafluoroethylene (PTFE), giving universal chemical resistance for demanding wet-chemistry environments involving acids, bases and organic solvents. The inert PTFE overcoat minimises adhesion of residues and protects the magnet during routine laboratory use. Supplied in a pack of three pieces from manufacturer Bohlender, these dumbbell bars are suited to vessels in which the disc ends stabilise rotation and maintain consistent coupling to the drive magnet. Net weight is 0,013 kg. The combination of PTFE durability, Alnico 5 magnetism and the defined dumbbell dimensions supports reproducible stirring performance in research, quality-control and preparative workflows that require robust, chemically resistant magnetic stir bars.
This article is part of Magnetic stirring bars, in Stirring, shaking & mixing.
Key features
- Pack size: 3 pc(s)
- Length: 37 mm
- Sliding disc diameter: 20 mm
- Material: Polytetrafluoroethylene (PTFE)
- Shape: Dumbbell
- Magnetic core: Alnico 5
- Technical Information Sheet:
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Questions about BOLA Dumbbell-Shaped Magnetic Stirring Bars, L 37 mm PTFE-coated
What is this article?
BOLA Dumbbell-Shaped Magnetic Stirring Bars, L 37 mm PTFE-coated is the article on this page. Luminix Health distributes Bohlender for laboratory use. It sits in Magnetic stirring bars, inside Stirring, shaking & mixing, in Lab instruments.
A magnetic stirring bar is the magnet coated in PTFE that spins inside a vessel, driven by a stirrer underneath. Length and shape, plain, oval or cross, have to suit the flask. A bar left against a dry glass wall will grind it.
Stirring keeps a mixture uniform or helps a solid dissolve. A magnetic stirrer spins a bar inside a closed vessel. An overhead stirrer drives a shaft when the liquid is viscous or the volume is large. A vortex mixer agitates a tube. A shaker moves a whole rack or a plate. The shape of the impeller and the speed decide whether the liquid turns over or merely spins. The vessels being stirred are indexed under ISO laboratory glassware.
Which category should I open next?
The category is Stirring, shaking & mixing. The sub-category is Magnetic stirring bars. The catalogue is Lab instruments.
Shelves beside this one are Stirring shafts, propellers & impellers, Magnetic stirrers, Stirring & mixing accessories, Homogenisers & dispersers, Shakers, rockers & rotators, Overhead stirrers and Vortex mixers.
What should I check before I order?
When this page shows a safety data sheet, use that manufacturer file. Hazard text does not belong in the sales description. For a pack size, a grade or a certificate that is not on the page, send a quote request or contact the team.
How does ordering and shipping work?
Luminix Health distributes this article from the heart of Europe. Delivery across Europe, two to five days when in stock. Standard delivery is free from €250 excl. VAT. Cold-chain goods and dangerous goods under ADR are never included in that free delivery. The terms are in the Shipping Policy. The full brand index is on shop by brand. Who we are is on about us.
Which other categories should I open?
The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.
