Description
Cylindrical magnetic stirring bar 8 x 40 mm is a PTFE-coated laboratory stir bar designed for magnetic mixing of liquids across research, analytical, and teaching laboratories. With an 8 mm diameter and 40 mm length, the cylindrical round-bar form provides stable coupling to standard magnetic stirrers and hotplate stirrers in vessels of corresponding scale. The outer material is polytetrafluoroethylene (PTFE), selected for chemical inertness and a smooth finish that limits abrasion on glassware and similar containers during prolonged stirring. This size is appropriate for medium beakers, flasks, and reaction vessels where consistent agitation supports dissolution, suspension, and routine sample preparation. Pack size is 10 pc(s), convenient for laboratory stock and parallel experimental work. The product is from manufacturer Witeg and follows established cylindrical PTFE stir-bar construction for everyday wet-chemistry use. Net weight is 0,007 kg, keeping each bar easy to place and retrieve magnetically after use. Typical applications include buffer and reagent mixing, titrations, and general laboratory stirring without shaft seals or overhead motors.
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 bar
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Questions about Magnetic stirring bar cylindrical 8x40mm
What is this article?
Magnetic stirring bar cylindrical 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.
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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.