Description
Magnetic stirring bar with ring 8 x 40 mm is a cylindrical laboratory stir bar engineered for dependable agitation on standard magnetic stirrers and hotplate systems. It measures 8 mm in diameter and 40 mm in length and features a round-rod profile with a centre ring that promotes steady rotation and reduces unwanted friction against glass or plastic vessel floors. Fully covered in polytetrafluoroethylene (PTFE), the bar offers chemical resistance suited to aqueous solutions, organic solvents, and everyday laboratory reagents. The product is supplied in packs of 10 pc(s), supporting efficient stocking for multi-user labs and parallel experiment setups. Net weight is 0,008 kg per bar, which simplifies handling during changeover and storage. This magnetic stirring bar with ring from manufacturer Witeg is appropriate for dissolution, blending, and sample preparation work in beakers, Erlenmeyer flasks, and comparable containers. The smooth PTFE exterior aids cleaning between runs and helps maintain consistent mixing performance across repeated use. Research, pharmaceutical, and industrial chemistry teams seeking a clearly dimensioned 8 x 40 mm PTFE stir bar with centre ring will find this unit a reliable choice for routine magnetic stirring tasks.
This article is part of Magnetic stirring bars, in Stirring, shaking & mixing.
Key features
- Pack size: 10 pc(s)
- Material: Polytetrafluoroethylene (PTFE)
- Diameter: 8 mm
- Length: 40 mm
- Shape: Cylindrical round rod
- Centre ring: Yes
- Technical Information Sheet:
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Questions about Magnetic stirring bar with ring 8x40mm
What is this article?
Magnetic stirring bar with ring 8x40mm 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.
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.