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Date: 09/10/99
Posted by: Henry Barwood
E-mail: hbarwood(at)indiana(dot)edu(no spam)
URL: http://

I need a bulk source of silica microspheres in the 0.2 - 0.6 micron size range. I have tried synthesizing them, but have not been successful in obtaining a good yield (and have had some problems re-dispersing the precipitates). Does anyone know of a source of bulk microspheres that are either monodisperse, or that I could size separate by sedimentation or centrifugation? I'm aware of several sources for size calibration, but they are too expensive for my purposes. Thanks. Henry Barwood hbarwood@indiana.edu

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