| 摘要 |
PCT No. PCT/SE92/00295 Sec. 371 Date Dec. 28, 1993 Sec. 102(e) Date Dec. 28, 1993 PCT Filed May 6, 1992 PCT Pub. No. WO92/19346 PCT Pub. Date Nov. 12, 1992.Described is a column for separation of substance mixtures with a liquid. A cylindrical tube has a closure at each end. At least one of the closures is a movable piston. The piston has a socket which is radially expandable by axial pressing of two interacting conical parts for sealing of the piston against the inner wall of the column. |
