The Bel-Art VWR Spinbar Stir Bars are essential tools for efficient mixing in laboratory settings. Each round stir bar, model F37111-5014, is designed to create a smooth, vortex-like motion in liquids, ensuring thorough mixing without the risk of splashing. Made from durable materials, these stir bars are resistant to chemical reactions and can withstand high temperatures. Their unique shape allows for optimal performance in various container sizes. Ideal for both educational and professional labs, these stir bars are a reliable choice for achieving consistent results in your experiments.