Suction filtration


Suction filtration

Suction Filtration is a method of filtration which allows for a greater rate of filtration. Whereas in normal filtration gravity provides the force which draws the liquid through the filter paper, in suction filtration a pressure gradient performs this function. This has the advantage of offering a variable rate depending on the strength of the pump being used to extract air from the Büchner flask. Care must be taken not to use such a strong vacuum that the filter paper does not rip (in which case all the filtrate will be lost back into the solvent) or in extreme cases break the glass flask.

Suction filtration is used in recrystallisation experiments.

References

Citation
title = FIltration techniques
url=http://orgchem.colorado.edu/hndbksupport/filt/filtration.html
accessdate = 2007-12-07


Wikimedia Foundation. 2010.

Look at other dictionaries:

  • Filtration — This article is about operation of solid fluid separation. For the mathematical concept, see filtration (mathematics). For the equipment used, see Filter (disambiguation). For filtration used in winemaking, see Filtration (wine). Diagram of… …   Wikipedia

  • Büchner funnel — Infobox Laboratory equipment name = Büchner funnel caption = A Büchner funnel connected to a flask with a tube leading to a vacuum pump acronym = other names = uses = Filtration inventor = Ernst Büchner manufacturer = model = related = Hirsch… …   Wikipedia

  • Vacuum cleaner — Cylinder vacuum cleaner for home use. French train vacuum cleaner …   Wikipedia

  • Swimming pool sanitation — articleissues refimprove = January 2008 technical = August 2008Swimming pool sanitation refers to both visual clarity and levels of microflora, such as bacteria and viruses in swimming pools. The goal of sanitation is to prevent the spread of… …   Wikipedia

  • Central vacuum cleaner — The power unit of a typical central vacuum cleaner for residential use A central vacuum cleaner (also known as built in or ducted) is a type of vacuum cleaner appliance, installed into a building as a semi permanent fixture. Central vacuum… …   Wikipedia

  • Dref Friction Spinning — Friction Spinning or Dref Spinning is a textile technology that allows very heavy count yarns and technical core wrapped yarns to be manufactured. These are most commonly used in mop yarns, flame retardants and high tech fancy yarns such as… …   Wikipedia

  • papermaking — [pā′pər māk΄iŋ] n. the making of paper papermaker n. * * * pa·per·mak·ing (pāʹpər mā kĭng) n. The process or craft of making paper.   paʹper·mak er n. * * * Introduction       formation of a matted or felted sheet, usually of cellulose fibres,… …   Universalium

  • Inventions in medieval Islam — A significant number of inventions were developed in the medieval Islamic world, a geopolitical region that has at various times extended from Al Andalus and Africa in the west to the Indian subcontinent and Malay Archipelago in the east.… …   Wikipedia

  • MythBusters (2006 season) — Country of origin Australia United States No. of episodes 28 (includes 2 specials) Broadcast Original channel Discovery Channel …   Wikipedia

  • The Hoover Company — Infobox Company company name = Hoover company company type = Division genre = Home Care foundation = 1907 founder = James Murray Spangler location city = location country = location = Glenwillow, Ohio origins = key people = area served = industry …   Wikipedia


We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.