Magnetic Stirrer Bars

A magnetic stirrer bar, also called a stir bar, spin bar, or PTFE stir bar, is a small magnetised rod sealed in a chemically inert coating that spins inside a beaker or flask when placed on a magnetic stirrer. It is the essential consumable behind every magnetic mixing setup, available in a range of shapes and sizes to suit different vessels, volumes, and mixing needs.

SmartLabs stocks magnetic stirrer bars for general chemistry, biology, and industrial laboratory use across South Africa, from small bars for everyday beaker mixing to larger bars for flasks and bigger volumes. Built to resist common acids, solvents, and bases, these stir bars are designed for repeated use alongside any compatible magnetic stirrer, making them a reliable, low cost staple for any lab bench.