Plastic twin-bladed centrifugal stirrer shaft whose blades open with increasing speed, making this shaft is perfect for sample vessels with narrow necks. For use at medium to high speeds. A range of Stirrer paddles and blades in metal and PTFE to compliment the OS40 and OS20 camlab choice overhead stirrers.
A 35cm PTFE-coated centrifugal stirrer shaft is a specialized laboratory tool designed for high-efficiency mixing, particularly in narrow-neck vessels. Its defining feature is a twin-bladed head that remains folded to pass through small openings and automatically expands via centrifugal force as rotation speeds increase. [1, 2, 3]
Top Product Recommendations
- DLAB 18900078 Centrifugal Stirrer: This is a widely available industrial model featuring a 35cm shaft and an 8.5cm expanded stirrer diameter. It is a standard accessory for overhead stirrers like the DLAB OS20 and OS40 series.
- Camlab 1189969 Centrifugal Stirrer: Specifically designed to complement the Camlab Choice overhead stirrers, this shaft is noted for its compatibility and is available through retailers like Amazon UK.
- Bohlender Centrifugal Stirrer Shaft (C 377-08): A premium option with a 350mm length and 8mm shaft diameter. It features a slightly larger 90mm stirrer head and is highly rated for its robust construction in aggressive chemical environments.
Key Specifications
- Chemical Resistance: The PTFE (Teflon) coating provides near-universal resistance to acids, bases, and solvents.
- Temperature Range: Most models are rated for extreme conditions, typically from -200°C to +260°C.
- Shaft Diameter: Typically 8mm, though some variants offer 6mm or 10mm options depending on the manufacturer.
- Design Utility: The non-adhesive surface prevents dyes or glues from sticking, making it easier to clean than glass or stainless steel alternatives.

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