Bel-Art F37102-0138 Spinbar Rare Earth Teflon Octagon Magnetic Stirring Bar; 2.54 x 0.95cm， Green</br></br><div style="text-align:left"><b>[Product Information]</b><br><ul><li>Octagonal shape creates more turbulence and a stronger vortex than a round， cylindrical shape or a polygonal shape</li><li>Teflon (PTFE) casing is chemically inert， can be used with corrosive chemicals， and helps reduce friction and wear while spinning</li><li>Built-in pivot ring helps reduce vibration and wear during stirring</li><li>Internal magnet made from samarium cobalt provides stronger magnetic attraction in viscous solutions and at high speeds than a magnet made from an alloy of alnico V</li><li>Green color for quick identification</li></ul></div></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br><img src='http://ecx.images-amazon.com/images/I/31pfVw3zVBL.jpg' noproxy></br><img src='http://ecx.images-amazon.com/images/I/41UK8A%2BuAQL.jpg' noproxy></br>