state why centrifugation is not desirable in ball mill
Rate-ZonalCentrifugation. In rate-zonalcentrifugationthe problem of cross-contamination of particles of different sedimentation rates may be avoided by layering the sample as a narrow zone on top of a density gradient (see Figure 2).In this way the faster sedimenting particles arenotcontaminated by the slower particles as occurs in differentialcentrifugation.
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