Bel-Art F37119-0010 Spinbar Teflon Micro (Flea) Magnetic Stirring Bar; 10 x 3mm， White</br></br><div style="text-align:left"><b>[Product Information]</b><br><ul><li>Round， cylindrical shape provides better centering and creates less turbulence than a multisided 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>Smooth surface provides quicker cleanup and less risk of cross-contamination than bars with pivot rings and allows the bar to spin on the bottom of the container to disperse light sediment and air bubbles</li><li>Internal magnet made from alnico V， an alloy of aluminum， nickel， iron， and cobalt</li><li>For stirring small volumes of liquid in containers such as test tubes， vials， and gradients</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/51OZ9LSAlwL.jpg' noproxy></br>