Fisherbrand™ PTFE-Coated Rare Earth Core Stir Bars, Cylindrical

Use for significantly increased magnetic strength and resistance to demagnetization. Rare earth stir bars are easily identified by a chemically inert carbon black spot.

Brand: Fisherbrand™

UNSPSC: 41122401

Code: 41

Additional Details:
Additional Details: Weight: 0.01200kg

Product Code. 11561953

Quantity Price
1 £ 17.61 / Pack of 5
In Stock 12
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Description and Specification


No. per Pack 2 Pack
For Use With Containers & Vessels / Stirrer Hot Plates
Length (Metric) 25mm
Color White
Certifications/Compliance Certificate of Conformance, Certificate of Analysis, Product Data Sheet, Material Safety Data Sheet (MSDS)
Shape Cylindrical
Product Type PTFE Stir Bars Cylindrical Rare Earth
Autoclavable Yes
Coating PTFE
Diameter (Metric) 6mm
Material PTFE encapsulated Samarium-Cobalt magnet core

  • Use rare earth magnets for significantly increased magnetic strength compared to those using AlNiCo magnets
  • Samarium-cobalt core is resistant to demagnetization
  • Identified by a chemically inert, carbon black spot
The high magnetic coupling power of rare earth stir bars may cause abrasion of the PTFE coating against the base of the container. When stirring arrays are used, as in multi-well plates, lateral interaction between stir bars may be observed.