These VWR® stirbars have polygon multifaceted surfaces that add turbulence relative to similar smooth size cylindrical bars.

• Center molded pivot ring minimizes the contact area between the bar and the vessel; reduces friction and chattering
• Marring of plastic containers is diminishe
• Alnico magnet encapsulated in FDA Grade, USP Class VI Teflon® brand PTFE Coating – Superior Chemical Compatibility
• Manufactured in a registered ISO 9001:2008 facility, as verified by SGS certification
• Autoclave-safe