| 摘要 |
PCT No. PCT/EP85/00228 Sec. 371 Date Dec. 31, 1985 Sec. 102(e) Date Dec. 31, 1985 PCT Filed May 13, 1985 PCT Pub. No. WO85/05285 PCT Pub. Date Dec. 5, 1985.A head for uniformly dispersing a liquid over the input surface of a chromatographic or reactive bed in a preparative column having a predetermined back pressure per unit flow rate, comprising an inlet tube through which the liquid is supplied. According to the invention the inside of the head (1) is profiled so that the vertical liquid flow through the bed is equated to the horizontal liquid flow in the head with due consideration to said back pressure of the column.
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