Patent ID: 6117317
Filing Date: 2000-09-12
Classification: B01D,G01N

Abstract:
A chromatography column, comprising:an elongated column tube having a first end and a second end spaced from said first end;first valve means associated with said first end;second valve means associated with said second end;wherein at least one of said first and second valve means has a central bore comprising a fixed longitudinal member disposed in said central bore, said longitudinal member having a passageway communicating with said column tube; a first port communicating with said passageway for feeding slurry into said column during packing of media; a second port communicating with said central bore for liquid to flush out said valve means; a third port communicating with said central bore but isolated from said passageway and said second port for the supply and removal of liquid to be separated by said media in said column; and a valve sleeve disposed in said central bore and moveable with respect to said longitudinal member between a first position allowing communication between said first port and said column through said passageway while precluding communication between said second port and said column, a second position precluding communication between said first port and said column and between said second port and said column, and a third position allowing communication between said first port and said column and between said second port and said column.