PTFE Magnetic Stir Bars 10 Pack | White Cylindrical | 6mm to 15mm Options

These white PTFE magnetic stir bars come in a pack of 10 cylindrical bars and are used to stir liquids and solutions on a magnetic stirrer. Five size options are offered, from 6mm to 15mm, so you can choose the bar to suit your beaker or flask. The photos show the bars but do not show a size range, so check the size you select in the options. Features and benefits: - PTFE casing around a built-in magnet: the outer coating is chemically inert, so the bar can be used with harsh chemicals - Low friction and wear while spinning: the coating helps the bar turn smoothly over long stirring runs - Recessed bezel: helps reduce vibration while stirring - Corrosion and abrasion resistant coating: suited to repeated use and washing - Smooth white cylindrical shape: easy to clean between batches - Five size options from 6mm to 15mm: pick a bar to suit your container - 10 bars in each pack: keep spares to hand or run several vessels at once Applications: - Stirring solutions in chemistry and biology laboratory work - School and college science experiments - Research and testing benches in workshops - Home brewing, such as making a yeast starter - Mixing tinctures and salves in modestly sized containers In the box: 10 x PTFE magnetic stir bars in the size you select. Note: Stir bars are used on a magnetic stirrer, which generates a rotating magnetic field; the stirrer is not included. A stir bar retriever helps lift bars out of deep containers or flasks. Choose the bar size to suit your vessel, and check chemical compatibility for your own process.