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Machine translation
1. (WO1979001147) A MICROPOROUS MEMBER WITH INTERCONNECTED,ORIENTED TAPERED VOIDS
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1979/001147    International Application No.:    PCT/US1979/000363
Publication Date: 27.12.1979 International Filing Date: 29.05.1979
IPC:
B01D 53/22 (2006.01), B01D 67/00 (2006.01), B01D 69/02 (2006.01), B01D 69/12 (2006.01)
Applicants:
Inventors:
Priority Data:
910110 30.05.1978 US
Title (EN) A MICROPOROUS MEMBER WITH INTERCONNECTED,ORIENTED TAPERED VOIDS
(FR) ELEMENT MICROPOREUX AVEC PORES CONIQUES ORIENTES D"INTERCONNECTION
Abstract: front page image
(EN)This invention relates to the field of circulation of fluids through open and closed systems. A major shortcoming of the use of a cotton plug in a sterile shake flask is the very slow rate of gas exchange through the cotton plug. Consequently, the gas exchange through the cotton plug is rate limiting rather than the biological process in the bacteriological medium. Elaborate sterile gas pumping systems have been developed and used to increase the rate of air through put. However, such systems are quite expensive, difficult to operate and maintain and provide a source of possible contamination. The present invention provides an improved circulation system which comprises a microporous member (110) which is simple to use, inexpensive to maintain, and yet effective to cause the flow of certain fluids therethrough. When the microporous me member (110) is installed in a conduit (171), chamber (180) or other container and the said conduit (171), chamber (180) or other container is filled with certain fluids, the microporous member (110) will urge the said fluid to flow through the conduit (171), chamber (180) or other container.
(FR)L"invention se rapporte au domaine de la circulation des fluides dans des systemes ouverts et fermes. Un desavantage majeur de l"utilisation d"un bouchon de coton dans un flacon sterile est la vitesse tres lente de l"echange gazeux a travers le bouchon de coton. Par consequent l"echange gazeux a travers le bouchon de coton limite la vitesse de reaction en milieu bacteriologique. Des systemes elabores de pompage de gaz en milieu sterile ont ete developpes et utilises pour augmenter la vitesse de passage de l"air. Cependant, de tels systemes sont tres onereux, difficiles a faire fonctionner et a entretenir et sont une source de contamination eventuelle. Un systeme de circulation ameliore comprend un element microporeux (110) qui est simple a utiliser, peu couteux a l"entretien, et cependant efficace pour provoquer l"ecoulement de certains fluides. Lorsque l"element microporeux (110) est monte dans une conduite (171), une chambre (180) ou autre recipient et que ladite conduite (171), chambre (180) ou autre recipient est rempli de certains fluides l"element microporeux (110) force ledit fluide a s"ecouler a travers la conduite (171), chambre (180) ou autre recipient.
Designated States:
Publication Language: English (EN)
Filing Language: English (EN)