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Machine translation
1. (WO1980001824) ASYMMETRIC PERMEABLE MEMBER
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1980/001824    International Application No.:    PCT/US1979/000105
Publication Date: 04.09.1980 International Filing Date: 22.02.1979
IPC:
C12M 1/24 (2006.01)
Applicants:
Inventors:
Priority Data:
US79/00105 22.02.1979 WO
Title (EN) ASYMMETRIC PERMEABLE MEMBER
(FR) DISPOSITIF PERMEABLE ASYMETRIQUE
Abstract: front page image
(EN)Fluid circulating systems and more particularly for use in bacteriologic research where a sterile flask has a plug (110) in the neck thereof and ambient air or other gas is allowed to pass therethrough. A major shortcoming of the use of a cotton plug in the sterile shake flask is the very slow rate of gas exchange through the cotton plug. The present invention provides an improved plug (110) in the manner of an asymmetric permeable member comprising at least one hollow member (116) for causing the circulation of a gas therethrough. The hollow member (116) has numerous shaped pores (121, 124, 127, 131) through it such that the absolute effusional resistance to gas flow is anisotropic. The member is useful in causing the circulation of gases.
(FR)Systemes de circulation de fluide utilises plus particulierement dans la recherche bacteriologique dans lesquels un bouchon (110) est place dans le col d"un ballon sterile et l"air ambiant ou un autre gaz est admis a traverser ce bouchon. Un inconvenient majeur de l"utilisation d"un bouchon en coton dans un ballon ou flasque sterile d"agitation est la vitesse tres faible d"echange gazeux au travers du bouchon de coton. Ce bouchon ameliore (110) sous la forme d"un organe permeable asymetrique comprend au moins un organe creux (116) permettant la circulation d"un gaz au travers de celui-ci. L"organe creux (116) possede de nombreux pores (121, 124, 127, 131) amenages au travers de celui-ci de sorte que la resistance absolue a l"ecoulement pour diffusion est anisotrope. L"organe est utile a la circulation des gaz.
Designated States:
Publication Language: English (EN)
Filing Language: English (EN)