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Stirring, Mixing, Vortexing Most standard 96 wellplates vortex within a few seconds at approximately 1800 RPM. 384 wellplates, including microplates, vortex around 2400 RPM. Viscous liquids require a higher RPM to vortex, sometimes at the upper limit of 3600 RPM. Particles, pellets and granular powders will mix, and this mixing ability is very dependent on viscosity, particle size and a specific speed. If the speed is too slow, the particles remain packed or do not lift. If the RPM is too fast, the particles only vibrate. At a very specific RPM, all particles of a certain size vortex, and this is a narrow range of about +-150 RPM. Deep wellplates vortex in a longer amount of time, nearly 5 times as long as a standard depth well plate. Flat bottom wells definitely vortex easier than radiused concave wells. The shakers can handle a surface load of around 200 g, and we can handle loads up to and over 3 lbs. on special orders. |
See QuickTime Movie of 96 Wellplate Vortexing (665K)
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Big Bear Automation, Inc.
Phone: 510.333.4338 |
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© 2008 Big Bear Automation |
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