• fragments
  • A majority of the reports demonstrated the processes of purifying the as-synthesized CQDs fragments via post-treatment such as filtration, centrifugation, column chromatography and gel-electrophoresis. (wikipedia.org)
  • gravity
  • There is a correlation between the size and density of a particle and the rate that the particle separates from a heterogeneous mixture, when the only force applied is that of gravity. (wikipedia.org)
  • solution
  • It should be kept in mind that the density of the sample is highly dependent on the hydration of the macromolecule, which in turn depends to a large extent on the dehydration power of the salt solution. (sigmaaldrich.com)
  • Common applications of heavy liquids include: Density gradient centrifugation Separating mixtures and sink/swim analysis Flotation process Determination of density The classical heavy liquids like 1,1,2,2-tetrabromoethane (Muthmanns solution), potassium tetraiodomercurate(II) (Thoulets solution), bromoform or diiodomethane which are used in mineralogy are very toxic. (wikipedia.org)