How to use: Place inside a container of liquid or solution that is seated on a magnetic stirrer. Use a rotating magnet or multiple stationary electromagnets to create a rotating magnetic field. Wide application: The stir plate magnet bar can work with various types of magnetic stirrers or heating stirrers. It is often used to stir liquids or solutions in scientific research, universities, and laboratories. Features: The laboratory bar offers acid resistance and stability, as well as solvent tolerance. It is insoluble in solvents. The maximum temperature is 250 degrees centigrade, and the minimum temperature is -196 degrees centigrade. Quality: The magnetic mixer bar is made of quality materials. Its cylindrical shape and smooth surface help reduce friction during rotation, suitable for laboratory use. Size: 7 x 25 mm Color: White Package Contents: 10 x Magnetic stirrer bars Only the above package content is included; other products are not included. Note: Lighting and display differences may cause slight color variations compared to the actual item. A measurement error of +/- 1-3 cm is acceptable.