Science Fair Project Encyclopedia
Filter funnel
A filter funnel is a laboratory funnel used for separating solids from liquids via the laboratory process of filtering.
In order to achieve this, a disk shaped piece of filter paper is usually folded in to a cone and placed within the funnel. The suspension of solid and liquid is then poured through the funnel, so as the solid particles are left on the filter paper whilst the liquid molecules pass through the paper to a vessel positioned below the funnel, producing a filtrate.
Filter funnels vary in size depending on the volume of suspension required to be filtered. They are usually constructed out of plastic except where the filtering of certain solvents requires the use of glass.
Last updated: 10-12-2005 06:34:00
10-26-2009 08:16:03
The contents of this article is licensed from www.wikipedia.org under the GNU Free Documentation License. Click here to see the transparent copy and copyright details
The contents of this article is licensed from www.wikipedia.org under the GNU Free Documentation License. Click here to see the transparent copy and copyright details