Description
BOLA egg-shaped magnetic stirring bars with PTFE coating are ellipsoid laboratory stirrers intended for smooth, centred mixing in round-bottom glassware. Each bar is approximately 20 mm long and 10 mm in diameter, with an ellipsoid profile that follows the curvature of flasks and reduces dead zones during continuous stirring. The magnetic core is Alnico 5 and is completely covered by polytetrafluoroethylene (PTFE), delivering universal chemical resistance for work with corrosive media, organic solvents and aqueous buffers. According to the manufacturer data, the geometry is suitable for 25 ml round-bottom flasks conforming to DIN 12 348, making these bars a practical choice for small-scale synthesis, dissolution and sample preparation. Offered as a single piece from manufacturer Bohlender, the PTFE-encapsulated design keeps the magnet protected while the low-adhesion surface simplifies cleaning between runs. Net weight is 0,00345 kg. The egg-shaped form supports stable coupling to standard magnetic stirrers and promotes even agitation without sharp edges that could stress thin-walled glass vessels.
This article is part of Magnetic stirring bars, in Stirring, shaking & mixing.
Key features
- Pack size: 1 pc
- Length: 20 mm
- Diameter: 10 mm
- Material: Polytetrafluoroethylene (PTFE)
- Shape: Ellipsoid (egg-shaped)
- Magnetic core: Alnico 5
- Technical Information Sheet:
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Questions about BOLA Egg-Shaped Magnetic Stirring Bars, L 20 mm Ø 10 mm PTFE-coated
What is this article?
BOLA Egg-Shaped Magnetic Stirring Bars, L 20 mm Ø 10 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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The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.