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ZnO nanoparticles do not sediment properly in centrifuge?

  1. Aug 10, 2017 #1
    I centrifuged my sample at 9000 rpm for 30 minutes. There is a layer of sediment on the wall but if i tilt the centrifuge it comes off the wall.
  2. jcsd
  3. Aug 10, 2017 #2

    jim mcnamara

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    Staff: Mentor

    For starters:
    What is the viscosity of the liquid? And what liquid is in the tube?

    ... assuming they truly are nanoparticles - because people have been misusing that word a lot.
    There can be electrostatic problems for example.

    Someone here may know the standard procedure for this separation.
  4. Aug 20, 2017 at 3:51 AM #3
    can you give me the name of liquid?
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