#centrifuge__extractor__separator  an apparatus that uses centrifugal force to separate particles from a suspension
  supertype:  #apparatus.equipment__apparatu__setup  equipment designed to serve a specific function
  subtype:  #hematocrit__haematocrit  a measuring instrument to determine (usually by centrifugation) the relative amounts of corpuscles and plasma in the blood
  subtype:  #ultracentrifuge  a high speed centrifuge used to determine the relative molecular masses of large molecules in high polymers and proteins

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