摘要:
Liquid chromatography apparatus including a hollow cylinder and a fixed end closure in which the effective useful length of the cylinder is varied through the use of a piston member that slides within the cylinder due to force exerted by a threaded shaft that is connected to a handle. Binding of the piston member in the cylinder is prevented by a ball joint that operatively connects the piston member to the threaded shaft and by a plurality of O-rings located on the piston member that contact the inner wall of the cylinder and tend to prevent tipping of the piston member. Even liquid distribution and filtering is obtained through a 0.5 micron porous sintered stainless steel liquid distribution disk. A smooth inclined surface in combination with an uninterrupted ring provide a trap for bubbles of gas located inside the cylinder. A composite porous segmented sintered liquid distribution disk is also presented that is particularly useful for large scale liquid chromatography as is the method of manufacturing the composite segmented disk.
摘要:
A liquid chromatography column apparatus which utilizes sorbent packing material in a tube having a first end portion and a second end portion. The first end portion of the tube includes a plug having a passage therethrough. The plug fits in the tube adjacent the packing material and is movable within the tube. An end fitting is also employed adjacent the plug. The end fitting has a passage therethrough which communicates with the passage of the plug. A seal is used inside the tube between the tube and the end fitting. The second end portion of the tube is enclosed and also includes a passage from the interior to the exterior of the tube. A manually actuable gear mechanism is incorporated in the end fitting of the first end portion of the tube for facilitating application of axial force to the packing material, thereby compressing the packing material so as to eliminate voids and channels in the packing material. Other features are also disclosed.
摘要:
The present invention relates to axial flow chromatography columns, methods for separating one or more analytes in a liquid by the use of such columns, and systems employing such columns. The column comprises a first port and a second port, the first port and said second port being at essentially the same level or elevation above the level of the bed space on the chromatography column.
摘要:
A dynamic axial compression column is disclosed herein. This dynamic axial column utilized external compression to prevent the creation of end plate space in the column. The dynamic axial column can include a tube defining a first opening, a second opening, and a lumen extending there between. The dynamic axial column can include a first end plate assembly sealing the first opening and movably extending at least partially into the lumen via the first opening, a second end plate assembly sealing the second opening, a plurality of rods extending along the outside of the tube and connecting the first end plate assembly and the second end plate assembly, and a first plurality of compression devices external to the tube and engaging one of the plurality of rods to bias the first end plate assembly towards the second end plate assembly.
摘要:
The present invention relates to axial flow chromatography columns, methods for separating one or more analytes in a liquid by the use of such columns, and systems employing such columns. The column comprises a first port and a second port, the first port and said second port being at essentially the same level or elevation above the level of the bed space on the chromatography column.
摘要:
A holding system for holding and hoisting a chromatography column of one or more chromatography columns is disclosed. The holding system includes an upright member and a plurality of holding members movably arranged along the upright member. A first supporting member is positioned at an end portion of the chromatography column, wherein a holding member of the plurality of holding members is configured to be engaged to the first supporting member. A second supporting member is positioned at another end portion of the chromatography column. A holding member of the plurality of holding members is configured to be engaged to the second supporting member. One or more hoist assisting members may be also present. A hoist assisting member is operatively connected to the holding member engaged to the first supporting member. The hoist assisting member is operable to move the holding member connected to the first supporting member for hoisting the chromatography column.
摘要:
The present invention relates to axial flow chromatography columns, methods for separating one or more analytes in a liquid by the use of such columns, and systems employing such columns. The column comprises a first port and a second port, the first port and said second port being at essentially the same level or elevation above the level of the bed space on the chromatography column.
摘要:
A chromatography column having a longitudinal axis and comprising a column wall with a first end and a second end, a first end plate assembly removably connectable to said first end of the column wall, a second end plate assembly removably connectable to said second end of the column wall, wherein said first end plate assembly, said column wall and said second end plate assembly are arranged along the longitudinal axis of the column wherein the column wall, and/or first end plate assembly and/or second end plate assembly is/are rotatable about an axis of rotation wherein said axis of rotation is parallel to the longitudinal axis of said column and positioned outside the column.
摘要:
A chromatography column design and a packing device, as well as a method for obtaining a column with a very compact and uniform bed are provided. The bed remains compact and uniform during operation of the column and during sanitization, storage and transportation of the column. The amount of hardware, particularly the hardware parts in contact with product, is minimized, especially with the implementation of an internal liner. With this internal liner, the packed bed can be separated from the column in intact form, or even prepared separately from, and outside of, the column.
摘要:
A column packing system comprises a control unit provided with software for monitoring the column interior pressure and/or flow through the column for use in calculating the breakpoint where a movable adapter comes into contact with a consolidated bed of bed media. The calculated breakpoint is used by the control unit to determine how much further the movable adapter has to move into the column in order to achieve a desired amount of bed compression.