Description
BOLA expanding stirrer blades are PTFE centrifugal agitator assemblies intended for vessels fitted with standard ground joints. The complete unit comprises two stirrer blades, a bolt and an expanding disc, all manufactured from polytetrafluoroethylene (PTFE). With a stirring-circle outer diameter of 50 mm and a blade thickness of 2 mm, the design is suitable for flasks and reactors with NS 24/29, NS 29/32 and larger ground joints, allowing insertion through the joint and subsequent expansion for effective mixing. PTFE construction delivers broad chemical resistance and a low-adhesion surface for solvents, acids, bases and other laboratory media. Supplied as two pieces from manufacturer Bohlender, the set has a net weight of 0,007 kg and integrates into overhead stirring arrangements used in synthesis, dissolution and process development. The expanding-disc principle enables secure positioning inside the vessel while the compact blade geometry supports reproducible agitation in research, quality-control and preparative laboratory workflows.
This article is part of Distillation heads, adapters & columns, in Distillation & extraction glassware.
Key features
- Pack size: 2 pc(s)
- Product type: Expanding stirrer blades with bolt and expanding disc
- Material: Polytetrafluoroethylene (PTFE)
- Stirring circle Ø: 50 mm
- Blade thickness: 2 mm
- Ground joint compatibility: NS 24/29, NS 29/32 and larger
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Questions about BOLA Centrifugal Stirrer Blades, NS 24/29 aØ 50 mm PTFE
What is this article?
BOLA Centrifugal Stirrer Blades, NS 24/29 aØ 50 mm PTFE is the article on this page. Luminix Health distributes Bohlender for laboratory use. It sits in Stirring & mixing accessories, inside Stirring, shaking & mixing, in Lab instruments.
Stirring accessories are the bosses, the retort clamps and the spare knobs that hold an overhead stirrer over the vessel. The stand has to carry the motor's mass, not only the flask's.
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 Stirring & mixing accessories. The catalogue is Lab instruments.
Shelves beside this one are Magnetic stirring bars, Stirring shafts, propellers & impellers, Magnetic stirrers, 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.

