Magnetic Stir Bar, PTFE, Octaganol, Pivot Ring, 25x7mm

Magnetic stir bar is made from ALNICO, one of the strongest permanent magnets available The sintered manufacturing process reduces the chance of decoupling (spin outs), which weaker stir bars often suffer from Encapsulation in PTFE protects both magnet and what it is stirring. Chemically inert and easy to clean Can withstand temperatures up to 250°C, making them suitable for use with both unheated and heated stirrers Low friction octagon shape with a center pivot ring helps create a strong mixing vortex, even with more viscous solutions The stir bar retriever can recover stir bars even in hot solutions when stirring and mixing is no longer required (10 per PK )