This oval-shaped PTFE magnetic stir bar features a 20 mm diameter at the widest center point and a 50 mm length. The diameter gradually decreases toward the ends, resulting in low friction, stable rotation, and efficient mixing — even at higher stirring speeds. Made from premium PTFE (Polytetrafluoroethylene), this stir bar offers excellent chemical resistance, non-stick properties, and a wide temperature tolerance. Ideal for chemical, biological, and industrial laboratories requiring reliable magnetic stirring. Product Details Feature Specification Material PTFE (Polytetrafluoroethylene) Shape Oval (tapered ends) Center Diameter 20 mm Length 50 mm Temperature Range –200 °C to 260 °C Chemical Resistance Excellent – suitable for most lab chemicals Application Magnetic stirring in vessels such as beakers or flasks Perfect for controlled mixing during heating or cooling processes, ensuring consistent and reliable stirring performance.