Magnetic Stir Bar 12×30 PTFE Double Cross Head Stirbar
Pictured is a 12 x 30 PTFE Coated Double Cross Head Stirbar, designed for use with tube-like containers. This stir bar is a very popular all-purpose stirrer. A stir bar (also known as a flea, spin bar, stirring bar or stirbar) is a magnetic bar used to stir a liquid mixture or solution, usually in a laboratory. The stir bar’s motion id driven by a separate rotating magnet or assembly of electromagnets (i.e. coils) located beneath the vessel containing the liquid.
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