Description
Magnetic stirring bar oval 20 x 70 mm is an ellipsoid PTFE laboratory stir bar sized for round-bottom flasks. It combines an outer diameter of 20 mm with a length of 70 mm, producing an elongated oval shape that tracks the flask curvature and supports steady magnetic agitation of reaction mixtures and solutions. Encapsulation is polytetrafluoroethylene (PTFE), offering the chemical inertness expected for general laboratory solvents and reagents. The form of the magnetic stirring bar is ellipsoid, making it suitable where cylindrical bars are less effective against rounded vessel bottoms. This oval stirring bar from manufacturer Witeg is offered in a pack of 10 pc(s) with a net weight of 0,063 kg per piece. It fits standard magnetic stirring workflows in research, quality control and preparative chemistry, covering categories such as magnetic stirring bars and stir fleas. The defined 20 × 70 mm dimensions help users select an appropriate bar for larger round-bottom flasks, while the PTFE surface supports straightforward cleaning and reuse within ordinary laboratory practice without additional performance claims beyond the stated construction and geometry.
This article is part of Magnetic stirring bars, in Stirring, shaking & mixing.
Key features
- Pack size: 10 pc(s)
- Shape: Ellipsoid (oval)
- Dimensions: Ø 20 mm × length 70 mm
- Material: Polytetrafluoroethylene (PTFE)
- Technical Information Sheet:
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Questions about Magnetic stirring bar oval 20 x 70 mm
What is this article?
Magnetic stirring bar oval 20 x 70 mm is the article on this page. Luminix Health distributes Witeg 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.