A magnetic stirring bar is a small cylinder or rod, typically made of plastic or glass, containing a magnet inside. It is used together with a magnetic stirrer: when the bar is placed in a liquid and the stirrer is activated, the magnetic field causes the bar to rotate, mixing the contents of the container.
This ensures efficient, contact-free stirring, reducing the risk of contamination. Magnetic stir bars are therefore essential tools in many fields, including chemistry, biology, and other scientific disciplines. Thanks to their simple and functional design, they provide reliable and reproducible results during experimentation.
There are several formats available to meet different needs:
Size: Stir bars come in various lengths and diameters, suitable for containers ranging from small vials to large beakers. Common sizes include bars from 2 cm to 10 cm in length, with diameters adapted to specific applications.
Shapes: In addition to classic cylindrical designs, specialized shapes such as cross or star stir bars are available, offering specific stirring performance depending on the type of mixing required.
Materials: Magnetic stir bars may be made of materials such as PTFE (polytetrafluoroethylene) for enhanced chemical resistance, or simpler materials for general-purpose applications.
Whether you are a scientist seeking precision in your experiments or a teacher illustrating mixing concepts, our range of magnetic stir bars provides an adaptable solution for every need.
