| 摘要 |
When a signal for filling up with or substituting a mobile phase is externally transmitted to a control part, the control part switches a valve for connecting a channel from a pump part to a sampling needle through a sampling loop and moves the sampling needle toward a drain port. Thus, a channel is formed through a mobile phase container->a pump->the valve->the sampling loop->the sampling needle->the drain port. In this channel state, the control part drives the pump at a high speed for substituting the channel connecting the pump and the sampling needle by a desired mobile phase.
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