Description
BOLA filling (stirring) balls with an approximate diameter of 20 mm are solid polytetrafluoroethylene (PTFE) spheres for laboratory filling and stirring work. They are made from full PTFE and present a fine, smooth surface as specified for this article. Each sales unit is one pack of 50 pieces, with a net weight of 0,455 kg. These spheres from manufacturer Bohlender belong to the BOLA laboratory range and suit setups where inert polymer balls are required as packing or stirring aids in glassware and related apparatus. The roughly 20 mm ball diameter allows straightforward matching to common vessel geometries used in synthesis, sample preparation, and general wet chemistry. Solid PTFE construction provides an all-polymer option without metal inserts, which is practical when polymer-only media are preferred. The fine surface supports clean handling during placement, rinsing, and routine laboratory use. Supplied as a ready pack of 50 pieces, the product is convenient for stocking research, teaching, and quality-control benches. Dimensions and pack quantity follow the stated manufacturer data for consistent reordering within the BOLA filling and stirring ball series. Country of origin is Germany.
This article is part of Magnetic stirrers, in Stirring, shaking & mixing.
Key features
- Pack size: 50 pieces
- Product type: Filling (stirring) balls
- Material: Polytetrafluoroethylene (PTFE)
- Diameter: approx. 20 mm
- Surface: Fine, smooth
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Questions about BOLA Balls, Ø 20 mm PTFE, with smooth surface, packing unit 50 pieces
What is this article?
BOLA Balls, Ø 20 mm PTFE, with smooth surface, packing unit 50 pieces is the article on this page. Luminix Health distributes Bohlender for laboratory use. It sits in Magnetic stirrers, inside Stirring, shaking & mixing, in Lab instruments.
A magnetic stirrer is the motor and the plate under the flask. Many also heat. The stirring capacity is the litres of a water-like liquid it can turn, and a viscous liquid defeats a rating that was measured on water.
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 stirrers. The catalogue is Lab instruments.
Shelves beside this one are Magnetic stirring bars, Stirring shafts, propellers & impellers, 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.

