What apparatus are required to perform filtration?

Below are descriptions of different types of filtration equipment including: sedimentation, gravity, vacuum, pressure, thickeners, clarifiers and centrifugal separators.

What is vacuum filtration method?

Vacuum filtration is a technique for separating a solid product from a liquid. The mixture of solid and liquid is poured through a filter paper in a Buchner funnel. The solid is trapped by the filter and the liquid is drawn through the funnel into the flask below, by a vacuum.

When to use vacuum filtration to filter liquid?

Do not use vacuum filtration to filter a solid from a liquid if it is the liquid that you want, and if the liquid is low boiling. Any solvent which boils at about 125 degrees or lower will boil off under the reduced pressure in the vacuum flask. To perform a vacuum filtration, clamp the flask securely to a ring stand.

What kind of filtration is used in organic chemistry?

The two types of filtration commonly used in organic chemistry laboratories are gravity filtration and vacuum or suction filtration. Vacuum filtration is used primarily to collect a desired solid, for instance, the collection of crystals in a recrystallization procedure.

Why do you need a vacuum in a distillation system?

Vacuum filtration (or suction filtration) is an indispensable technique for distillation, extraction, and purification. Compared with traditional, gravity-assisted filtration, adding a vacuum to your system greatly increases speed and efficiency in your laboratory.

What do you use to filter precipitates in vacuum?

In those cases, gravity filtration is used. If a very fine precipitate has to be filtered, it is advisable to use some filter aid like diatomaceous earth or Celite. This will prevent that the holes of the filter paper will get clogged up too fast.