| 摘要 |
A solution sending system includes a flow path; a pump including a space that also serves as part of the flow path; a flow volume detection unit that detects a flow volume per unit time in the flow path; a control unit that controls the pump in accordance with a detected value of the flow volume detection unit and a set value; and a flow path resistance changing unit that changes a flow path resistance in the flow path. The flow path resistance changing unit changes the flow path resistance in the flow path in accordance with the detected value and the set value.
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