Description
BOLA cylindrical magnetic stirring bars, L 20 mm Ø 3 mm with PTFE coating, are slender standard magnetic stir bars designed for efficient mixing in narrow vessels and smaller working volumes. Each bar features a PTFE-coated Alnico 5 magnetic core in a round-rod cylindrical form that couples smoothly to laboratory magnetic stirrers. Approximate dimensions of 20 mm length and 3 mm diameter make this slim profile suitable for test tubes, small flasks and other confined geometries where a low-profile stir bar is preferred. The polytetrafluoroethylene overcoat delivers universal chemical resistance, supporting use with diverse aqueous and organic laboratory media. Offered in a pack of 10 pieces with a net weight of 0,001 kg per bar, the set is convenient for multi-station benches and routine sample preparation. These BOLA stirring bars from manufacturer Bohlender provide a chemically inert outer surface and a reliable magnetic core for everyday agitation tasks in research, analytical and teaching laboratories that require consistent, contamination-resistant mixing performance.
This article is part of Magnetic stirring bars, in Stirring, shaking & mixing.
Key features
- Pack size: 10 pc(s)
- Product type: Cylindrical magnetic stirring bar
- Length: 20 mm
- Diameter: 3 mm
- Material: Polytetrafluoroethylene (PTFE)
- Magnetic core: Alnico 5
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Questions about BOLA Cylindrical Magnetic Stirring Bars, L 20 mm Ø 3 mm PTFE-coated
What is this article?
BOLA Cylindrical Magnetic Stirring Bars, L 20 mm Ø 3 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.

