A ustensil, often made of glass, for introducing liquids and finely divided solids into a flask or container and for carrying out filtration and separation procedures.
Büchner
funnel
Filter funnel
Hirsch funnel
Separating funnel
A conical utensil, often made of glass, for introducing a liquid or a divided solid (in grains or powder) into a flask or container.
A name given to a flat-bottomed porcelain funnel used for suction filtration.
The bottom of the funnel comprise holes of variable diameter is covered by a porous filter made out of paper or glass fibre.
A Buchner flask is a thick walled conical flask which has an outlet which is connected to a source of vacuum, usually a water pump.
A V-shaped funnel used for reduced presssure filtration. The bottom is made up of a flat disc with holes in it which are covered by a filter paper. A Hirsch funnel is used in place of a Büchner funnel when small quantities of precipitate are to be filtered.
This is a glass container comprising a bulb, which can be stoppered, fitted with a ground glass or Teflon tap. It is used to separate two immiscible liquids.
