The oval stirring magnets are particularly well suited to flasks or bottles with a round base, where traditional flat stir bars do not achieve optimal contact. The curves of the magnet thus follow the contour of the vessel’s base, resulting in more uniform stirring and improved fluid dynamics.
The stir bar is used in conjunction with magnetic stirrers – often combined with a heating jacket or hotplate – where a rotating magnetic field beneath the vessel causes the stir bar to rotate within the liquid, thereby ensuring effective mixing, dissolution or temperature equalisation.
Choose the right stir bar size
To prevent inefficient stirring in your vessel, the length of the drive magnet in the stirrer and the stirring magnet must be approximately the same. Furthermore, the distance between the drive magnet and the stirrer’s magnet must be as small as possible.
If you are working with viscous liquids, it is advisable to use extra-strong magnets. Please contact us for further details.
Specifications for the oval stirring magnets
- Dimensions: L 20 x Ø 10 mm or L 25 x Ø 12 mm.
- PTFE-coated.
- Can withstand temperatures from -200°C to 250°C.
- Chemical resistance: +++ universal.
- 6 pieces per pack.
