Description
BOLA cylindrical magnetic stirring bars with PTFE coating are standard laboratory stir bars for everyday mixing tasks. Each unit incorporates an Alnico 5 magnetic core fully encapsulated in polytetrafluoroethylene (PTFE), delivering universal chemical resistance against a broad spectrum of solvents, acids and reagents. The round rod geometry measures approximately 55 mm in length and 12 mm in diameter, making it suitable for many flask and beaker sizes on magnetic stirrers. The seamless PTFE overcoat protects the magnet, minimises friction and supports smooth, stable rotation during continuous operation. Net weight is 0,02 kg. Offered as a single piece from manufacturer Bohlender, this cylindrical stir bar is intended for chemical synthesis, sample preparation and general laboratory workflows where reliable magnetic coupling and inert surface contact are required. Its standard form factor integrates readily into existing stirring setups without specialised adapters.
This article is part of Magnetic stirring bars, in Stirring, shaking & mixing.
Key features
- Pack size: 1 pc
- Length: 55 mm
- Diameter: 12 mm
- Material: Polytetrafluoroethylene (PTFE)
- Shape: Cylindrical (round rod)
- Magnetic core: Alnico 5
- Technical Information Sheet:
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Questions about BOLA Cylindrical Magnetic Stirring Bars, L 55 mm Ø 12 mm PTFE-coated
What is this article?
BOLA Cylindrical Magnetic Stirring Bars, L 55 mm Ø 12 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.
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Luminix Health distributes this article from the heart of Europe. Articles in stock ship within 2–5 business days. 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.