Ultrafiltration (UF) is a variety of membrane filtration in which forces like pressure or concentration gradients leads to a separation through a semipermeable membrane. Suspended solids and solutes of high molecular weight are retained in the so-called retentate, while water and low molecular weight solutes pass through the membrane in the permea...
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http://en.wikipedia.org/wiki/Ultrafiltration
[industrial] Ultrafiltration is a type of membrane filtration. Industries such as chemical and pharmaceutical manufacturing, food and beverage processing, and waste water treatment, employ ultrafiltration in order to recycle flow or add value to later products. Ultrafiltration is commonly abbreviated to `UF.` UF`s main attraction is its abi...
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http://en.wikipedia.org/wiki/Ultrafiltration_(industrial)
[renal] In biological terms, ultrafiltration occurs at the barrier between the blood and the filtrate in the renal capsule or Bowman`s capsule in the kidneys. The Bowman`s capsule contains a dense capillary network called the glomerulus. Blood flows into these capillaries through the afferent arteriole and leaves through the efferent arteri...
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http://en.wikipedia.org/wiki/Ultrafiltration_(renal)
(from the article `dialysis`) ...concentration in the blood is lower than in the solution; indeed, water tends to pass from the solution into the blood. The dilution of the blood ... ...depend on penetration of molecules through semipermeable membranes. Membrane filtration involves simple migration resulting from a concentration ... ...
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http://www.britannica.com/eb/a-z/u/4
<procedure> Filtration under pressure. In the kidney, an ultrafiltrate is formed from plasma because the blood is at higher pressure than the lumen of the glomerulus. Also used experimentally to fractionate and concentrate solutions in the laboratory using selectively permeable artificial membranes. ... (18 Nov 1997) ...
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http://www.encyclo.co.uk/local/20973
(ul″trә-fil-tra´shәn) filtration through filters with minute pores, thus allowing the separation of extremely minute particles. It occurs naturally, as in the filtration of plasma at the capillary membrane, and is also performed clinically and in the laboratory, such as in hemodialysis, where it ...
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Filtration under pressure. In the kidney, an ultrafiltrate is formed from plasma because the blood is at higher pressure than the lumen of the glomerulus. Also used experimentally to fractionate and concentrate solutions in the laboratory using selectively permeable artificial membranes.
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Type: Term Pronunciation: ŭl′tră-fil-trā′shŭn Definitions: 1. Filtration through a semipermeable membrane or any filter that separates colloid solutions from crystalloids or separates particles of different size in a colloid mixture.
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http://www.medilexicon.com/medicaldictionary.php?t=95505
the separation from a liquid of particles of 0·005-0·1 µm in size by pumping the liquid through a synthetic membrane at high pressure
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http://www.oasisenviro.co.uk/Glossary%20S%20to%20W.htm
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