Magnetic Stir Bars: The Right Choice for Laboratory Mixing Operations

Magnetic stir bars are PTFE coated magnets used to stir liquids in a container such as beakers or flasks. Widely used in chemistry and biology research labs.

The bar is placed within a container and made to spin with an external magnetic field. Typically, this magnetic field is produced by a magnetic stirrers. You can purchase a magnetic stirrer that has a superior quality from Thermomac.

Stir bars differ in shape, size, and material. What you choose depends on the application. The form of the stir bar will depend on the vessel, volume and the shape of the bottom used for the application.

Round – Commonly used with flat bottom vessels.

Pivot Ring – Designed with a central pivot ring, these stir bars work best in sloped or uneven-bottomed containers. The ring helps reduce wear and friction by minimizing vibrations.

Spherical – Spherical or ball-shaped stir bars are ideal for use in small volumes, often found in bottles or tubes.

Olive (Elliptical or curved stir bars) – These stir bars are designed to work in round-bottomed containers.

Cross – Cross-shaped stir bars create additional turbulence and prevent sedimentation, making them suitable for high-speed mixing.

Triangular – Triangular or prism-shaped stir bars generate minimal turbulence at low speeds and reduce sedimentation due to their shape.

Octagonal (Steering Wheel) – These stir bars provide a larger surface area and additional turbulence due to their interrupted profile, which enhances mixing efficiency.

Also we have PTFE stirring bar retriever that has different sizes and used for the removal of stirring bars from aggressive liquids

Our commitment to quality ensures that each product we sell meets the highest standards of quality, durability, precision, and reliability. Discover the efficiency and reliability of Borox's Magnetic Stirring Bars.