PTFE Magnetic Stir Bars 25 Pack | C3X7 | 7 x 3mm White

These PTFE coated magnetic stir bars come as a pack of 25 in size C3X7, each bar measuring 0.70 x 0.30 x 0.30cm. Each bar has a magnet inside a PTFE coating, so it can be dropped into a liquid and spun by a magnetic stirrer to mix a solution without any contact from outside the vessel. Features and benefits: - 25 stir bars in one pack: enough to keep spares on the bench or to run several small vessels at once - PTFE coating over a built-in magnet: resists corrosion and abrasion and is chemically inert - Suitable for use with corrosive chemicals: the coating also helps reduce friction and wear while the bar spins - Small 0.70 x 0.30 x 0.30cm size: reaches the bottom of deep containers and flasks - White colour: easy to see against most solutions - Shaped for efficient stirring: works on a standard magnetic stirrer, which spins the bar with a rotating magnetic field Applications: - Stirring liquids and solutions in chemistry and biology laboratories - Small flask and vial mixing on a hotplate stirrer - School science and teaching demonstrations - Home lab and workshop mixing jobs In the box: 25 x magnetic stir bars, size C3X7. Note: Use with a magnetic stirrer and place the bar in the vessel before starting. Start at low speed so the bar stays coupled to the magnet. Check suitability for your chemicals before use.