| 摘要 |
A chromatographic separator allows a feed liquid material consisting of two or more than two components and a liquid eluent to circulate within an endless circular path 16, wherein columns 14 are coupled to one another, to separate the feed liquid material into two components. The selector valves 23 and 33 are switched to allow pumps 20 and 30 to serve to circulate the fluid through the circular path 16 and to inject each liquid from the tanks 25 and 35. Furthermore, an ordinary ON/OFF valve is used as discharge valves 41 and 51 for each of the liquids and thus the pressure specification required for the circular path 1.6 is reduced.
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