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

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: 0.07000kg

Product Code. 11848922

Quantity Price
1 £ 26.37 / Pack of 5
In Stock 16
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Description and Specification


No. per Pack 2 Pack
Shape Elliptical
Length (Metric) 25mm
Certifications/Compliance Certificate of Conformance, Certificate of Analysis, Product Data Sheet, Material Safety Data Sheet (MSDS)
Autoclavable Yes
For Use With Containers & Vessels / Stirrer Hot Plates
Color White
Product Type PTFE Stirrer Bars Elliptical Rare Earth
Diameter (Metric) 14mm
Material PTFE encapsulated Samarium-Cobalt magnet core
Coating PTFE

  • 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.