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 is compatible with various types of magnetic stirrers or heating stirrers. Commonly used for stirring liquids or solutions in scientific research, universities, and laboratories. Features: The laboratory bar offers resistance to acids and solvents, and is insoluble in most solvents. Operates within a temperature range from -196°C to 250°C. Quality material: The magnetic stir bar is made of high-quality material. Its cylindrical shape and smooth surface reduce friction and ensure stable rotation in laboratory applications. Size: 7 x 25 mm Material: PTFE coated Color: White Package Contents: 10 x Magnetic Stir Bars Note: The package includes only the items listed above. Other products are not included. Note: Lighting and display differences may cause slight variations in color between the image and the actual item. Measurement may vary by +/- 1-3 cm.