Description
Magnetic stirring bar 7×2 mm is a compact cylindrical stir bar for small-volume mixing on magnetic stirrers. It features a magnetic core fully encapsulated in polytetrafluoroethylene (PTFE), providing a chemically resistant, smooth outer surface that minimises adhesion and simplifies cleaning. Measuring 7 mm in length and 2 mm in diameter, the bar is intended for vials, micro tubes and other narrow vessels where larger stir bars cannot rotate freely. The design is cylindrical (round bar form) without a centre ring, favouring stable spinning in confined geometries. Smooth PTFE surfaces reduce scratching of glassware and support reliable stirring of aqueous and many organic media used in analytical and preparative work. Packed in units of ten pieces from manufacturer Marienfeld, these miniature stirring bars are practical for multi-sample workflows, method development and routine laboratory mixing. Their small footprint makes them suitable for low-volume reaction screening, dissolution tests and gentle agitation where controlled, contact-free stirring is required.
This article is part of Magnetic stirring bars, in Stirring, shaking & mixing.
Key features
- Pack size: 10 pc(s)
- Product type: Magnetic stirring bar
- Length: 7 mm
- Diameter: 2 mm
- Shape: Cylindrical (round bar)
- EAN: 4250317314796
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Questions about Magnetic stirring bars 7x2 mm,
What is this article?
Magnetic stirring bars 7x2 mm, is the article on this page. Luminix Health distributes Marienfeld for laboratory use. It sits in Barreaux d'agitation magnétiques, inside Agitation, secouage & mélange, in Instruments de laboratoire.
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 Agitation, secouage & mélange. The sub-category is Barreaux d'agitation magnétiques. The catalogue is Instruments de laboratoire.
Shelves beside this one are Arbres d'agitation, hélices & turbines, Agitateurs magnétiques, Accessoires d'agitation & de mélange, Homogénéiseurs & disperseurs, Agitateurs, basculeurs & rotateurs, Agitateurs suspendus and Mélangeurs vortex.
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The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.