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• Creates more turbulence than a round, cylindrical shape
• PTFE casing is chemically inert, can be used with corrosive chemicals, and helps reduce friction and wear while spinning
• Built-in pivot ring helps reduce vibration and wear during stirring
• Internal magnet made from alnico V, an alloy of aluminum, nickel, iron, and cobalt
The Dynalon octagonal stir bar with built-in pivot ring has a white PTFE casing and an internal magnet made from alnico V (an alloy of aluminum, nickel, iron, and cobalt) for a range of laboratory stirring applications. The octagonal shape creates more turbulence and a stronger vortex than a round, cylindrical shape or a polygonal shape. The magnet sits inside a polytetrafluoroethylene (PTFE) casing, which is chemically inert, can be used with corrosive chemicals, and helps reduce friction and wear while spinning. A built-in pivot ring minimizes contact between the bar and the container to help reduce vibration and wear during stirring.
Magnetic stir bars (sometimes called stirring bars, spin bars, or fleas) are used to stir a liquid or solution in biological, chemical, medical, and research laboratory applications. The stir bar is placed inside a container of liquid or solution that is seated on a magnetic stirrer (also called a magnetic mixer), which is a laboratory device that creates a rotating magnetic field using a rotating magnet or multiple stationary electromagnets. The rotating magnetic field causes the bar to spin, which stirs the liquid or solution. Stirring bars are offered in a variety of sizes and shapes, and they are encased in materials such as glass or plastic to help prevent contamination of the liquid or solution, to reduce friction, and to provide resistance to chemicals, abrasion, and heat. The bar may have a pivot ring or pivot point to minimize contact with the container, reduce friction, and improve its spinning. The size and shape of the container and the volume and viscosity of the liquid or solution to be stirred determine which stir bar shape, size, and casing will suit a particular application.
Strict quality assurance from The Lab Depot for Magnetic Stir Bars and more than 750,000 other lab supplies means that you will always have confidence in your research and development or quality control results. After all, your laboratory testing procedures should always include using only the very best – whether magnetic stir bars, chemicals, glassware or very sophisticated instrumentation. Always look to The Lab Depot for value and for quality lab supplies.