colloidal gold

MIguel Moreno mmm42608 at
Thu Mar 2 05:41:07 EST 2000

Hi everybody!
I'm trying to centrifugate small particles of gold, about 10 nm. I'm
centrifugating at 35000 rpm but the particles don't precipitate. Does
anybody centrifugate this kind of particles? What I have to do?

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