ultrafilter


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Related to ultrafilter: ultrafiltration

ultrafilter

 [ul″trah-fil´ter]
the filter used in ultrafiltration.

ul·tra·fil·ter

(ŭl'tră-fil'tĕr),
A semipermeable membrane (collodion, fish bladder, or filter paper impregnated with gels) used as a filter to separate colloids and large molecules from water and small molecules, which pass through.
References in periodicals archive ?
In Europe, some commercially available machines will produce the sterile solution online from conventional dialysate by sequential ultrafiltration through ultrafilter membranes.
Because [F.sup.[phi](y)] is an ultrafilter on X, then X - i([lambda]) [member of] [F.sup.[phi](y)] and so [phi](y)([1.sub.x-i[lambda]]) = 1.
Let [PSI] be a neutrosophic ultrafilter on a set X.
Ultra.air is the UK arm of German-based global enterprise Ultrafilter which manufactures hi-tech filtration solutions for compressed air, technical gases and liquids in industrial and process filtration.
One such company and filter is the UF-40 Ultrafilter from Nephros, a modern medical device company that pioneers, innovates and invents first-in-class therapies and products that create a better quality of life for the populations they serve:
By Lemma 1.1, there is an ultrafilter U on X such that sec G [subset] U [subset] G.
The definition of "almost all" needed to make this work, however, is technically somewhat complicated and involves the selection of a so-called non-principal (or "free") ultrafilter. Independently of which ultrafilter is chosen, we have that if a is larger than b everywhere except for a finite number of places, then a > b.
Other leading exhibitors include: Aerzen, Beko, Donaldson Ultrafilter, Factair, Gardner Denver, Jacob, Reelcare, Teseo, and Testo, plus many more--visit: www.airtech08.com for a complete listing.
The elements of W(X, F) are subfamilies of F which are maximal with respect to the finite intersection properly (an ultrafilter in F if F is a ring).
A recent example is our point-of-use ultrafilter developed to remove bacterial alkaline phosphatase.
Donaldson Ultrafilter, a division of Donaldson Company, Inc., announces its new DS Series compressed air condensate oil/water separator product line.
The Kinetico Purefecta[TM], Sears Kenmore Ultrafilter 500, and Watts Premier Ultra 5 were tested at the Ann Arbor, Michigan, laboratories of NSF International.