Description
Rotilabo® ellipsoidal magnetic stirring rods are PTFE-coated stir bars designed for reliable mixing on magnetic stirrers in laboratory vessels. Each rod measures 20 mm in diameter and 70 mm in length, with an ellipsoidal profile that promotes smooth rotation and effective fluid movement across a range of flask and beaker geometries. The inert PTFE coating protects the magnetic core and limits unwanted interaction with reagents, solvents and aqueous media commonly used in synthesis, sample preparation and general laboratory work. Offered as a single piece with a unit weight of 0,062 kg, these accessories from manufacturer ROTH SELECTION support everyday stirring tasks where chemical resistance and consistent coupling to the drive magnet are essential. Suitable for research, analytical and teaching environments, the ellipsoidal form helps maintain stable stirring performance while the PTFE surface eases cleaning between runs. Pair them with compatible magnetic stirrers whenever controlled agitation of liquids is required without mechanical overhead stirring.
This article is part of Magnetic stirring bars, in Stirring, shaking & mixing.
Key features
- Pack sizes: 1 pc, 10 pc(s)
- Product type: Ellipsoidal magnetic stirring rod
- Brand: Rotilabo®
- Coating: PTFE-coated
- Diameter: 20 mm
- Length: 70 mm
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Questions about Rotilabo®-ellipsoidal magn. stirr. rods, PTFE-coated, Ø 20 mm, length 70 mm
What is this article?
Rotilabo®-ellipsoidal magn. stirr. rods, PTFE-coated, Ø 20 mm, length 70 mm is the article on this page. Luminix Health distributes Carl Roth 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?
The technical information on this page is the manufacturer's sheet. Read that, not a rewritten specification.
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.