Suction filtration

  • Place a rubber cone in the mouth of the suction flask.
  • Place the Büchner funnel in the rubber cone.
  • Place a filter paper inside the Büchner funnel.
  • Turn on the vacuum.
  • Pour a little of the solvent onto the filter to make it stick to the funnel.
  • Pour the mixture to be filtered into the funnel.
  • After all the liquid has been sucked through, wash the filter cake with a little solvent.