Description
PR 31 propeller stirrer with guide ring (V4A) is a stainless-steel laboratory impeller designed for efficient mixing of solutions, emulsions and suspensions in compact vessels. It features a total length of 400 mm and an 8 mm diameter stirring shaft, matching ideal vessel diameters of 83–165 mm, bottom clearances of 17–33 mm, fill heights of 83–165 mm and working volumes from 400 to 3,500 ml. The integrated guide ring stabilises flow patterns and enhances mixing uniformity. Manufactured from V4A stainless steel by Heidolph, the stirrer combines corrosion resistance with mechanical durability for routine laboratory service. Supplied as one piece, it mounts directly on standard overhead stirrer drives. The compact geometry suits analytical and preparative work where controlled agitation of moderate liquid volumes is required. Laboratories value the robust construction and precise dimensional fit for reproducible results across quality-control, research and small-scale process applications.
This article is part of Stirring shafts, propellers & impellers, in Stirring, shaking & mixing.
Key features
- Pack size: 1 pc
- Product type: PR 31
- Material: V4A stainless steel
- Length: 400 mm
- Shaft diameter: 8 mm
- EAN: 4255661402663
- Technical Information Sheet:
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Questions about PR 31 Ringed Propeller (V4A)
What is this article?
PR 31 Ringed Propeller (V4A) is the article on this page. Luminix Health distributes Heidolph for laboratory use. It sits in Stirring shafts, propellers & impellers, inside Stirring, shaking & mixing, in Lab instruments.
A shaft, a propeller or an impeller is the wetted end of an overhead stirrer. The diameter and the pitch decide whether the liquid turns over. The material, stainless steel or PTFE, decides what the liquid may be. The chuck size has to match the stirrer.
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 shafts, propellers & impellers. The catalogue is Lab instruments.
Shelves beside this one are Magnetic stirring bars, 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.