Description
Magnetic stirring bar 12x4,5 mm is a cylindrical laboratory stir bar with a magnetic core fully encapsulated in polytetrafluoroethylene (PTFE). It measures 12 mm in length and 4,5 mm in diameter, features smooth surfaces and has no centre ring, giving a clean round-rod profile for stable rotation on magnetic stirrers. The PTFE coating provides broad chemical resistance for routine mixing, dissolution and homogenisation in glassware and reaction vessels. Packaged as 10 pieces, the bars from manufacturer Marienfeld are well suited to smaller flasks and tubes where compact dimensions and residue-free surfaces matter. Smooth PTFE walls help limit sample carry-over and simplify cleaning between runs, while the sealed magnetic core maintains reliable coupling to the drive magnet. Ideal for general laboratory stirring of aqueous and many organic media under standard benchtop conditions.
This article is part of Magnetic stirring bars, in Stirring, shaking & mixing.
Key features
- Pack size: 10 pc(s)
- Length: 12 mm
- Diameter: 4,5 mm
- Shape: cylindrical round rod
- Centre ring: no
- EAN: 4250317314833
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Questions about Magnetic stirring bars 12x4.5 mm,
What is this article?
Magnetic stirring bars 12x4.5 mm, is the article on this page. Luminix Health distributes Marienfeld 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. 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.