Description
BOLA egg-shaped magnetic stirring bars measuring approximately 70 mm in length and 20 mm in diameter incorporate a magnetic core of Alnico 5 fully encased in a polytetrafluoroethylene (PTFE) coating. This ellipsoid geometry is optimised for use in round-bottom flasks according to DIN 12 348 with a nominal volume of 10000 ml, promoting smooth and efficient mixing. The PTFE overcoat confers universal chemical resistance, allowing the stirring bar to withstand contact with a broad spectrum of laboratory reagents and solvents without degradation. Each unit is supplied as one piece and has a net weight of 0,06 kg. These BOLA stirring bars from manufacturer Bohlender support routine magnetic stirring tasks in analytical, synthetic and quality-control laboratories. The inert surface reduces sample carry-over and facilitates thorough cleaning after use. With a diameter of 20 mm and an egg-shaped profile, the bar maintains stable coupling to the drive magnet while generating an effective vortex even in larger vessels. The combination of robust Alnico 5 magnetism and chemically inert PTFE makes this accessory a practical choice for demanding wet-chemistry workflows.
This article is part of Magnetic stirring bars, in Stirring, shaking & mixing.
Key features
- Pack size: 1 pc
- Length: approx. 70 mm
- Diameter: 20 mm
- Shape: Ellipsoid
- Material: Polytetrafluorethylen (PTFE)
- Magnetic core: Alnico 5
- Technical Information Sheet:
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Questions about BOLA Egg-Shaped Magnetic Stirring Bars, L 70 mm Ø 20 mm PTFE-coated
What is this article?
BOLA Egg-Shaped Magnetic Stirring Bars, L 70 mm Ø 20 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.