PTFE Magnetic Stir Bar Set - 7Pcs

7 Piece Set of PTFE Magnetic Stir Bars Chemical Resistant - Teflon PTFE material can be used with corrosive chemicals, including acid and base Strong - (PTFE) Stir bars are coated with Teflon (PTFE) covering, which is chemically inert and can be used with corrosive chemicals, also helps reduce friction and wear while spinning Individual shapes create different vortexes for efficient and effective stirring East Use - Place inside a container of liquid that is seated on a magnetic stirrer. The stir bar is placed inside a container of liquid or solution that is seated on a magnetic stirrer, creating a rotating magnetic field using a rotating magnet or multiple stationary electromagnets. Wide Selection Of Sizes - Available for many use cases and industries 10mm x 5mm 12mm x 7mm 20mm x 8mm 25mm x 7mm 28mm x 8mm 30mm x 8mm 35mm x 9mm