SpinfinĀ® Magnetic Stirring Bars
By Bel Art ProductsSpinfin® magnetic stirring bars agitate liquids in round bottom vessels such as test tubes, cylinders and flasks, where other stirring bars cannot be used. Maintains its position in a vessel and will not wobble. Alnico magnet encapsulated in FDA Grade, USP Class VI PTFE low friction coating. Autoclave safe.