An object of the present invention is to provide an improved water agent dispensing stand workability at the installation site. And A water tank unit, connected to the water tank unit, and the drainage pipe portion where the drainage from the water tank unit flows, provided below the water tub unit, opening the drainage tube portion penetrates 3a and a bottom is formed, the bottom portion includes a bottom plate member 3 shaped constituted by a plurality of panels 32 ... 32, the arrangement of the plurality of the panel member at the bottom plate member 3 32 ... 32 by changing the, it is possible to change the position of the opening 3a in the bottom.FIELD 2【課題】設置現場での施工性を改善した水剤調剤台を提供する。【解決手段】水槽部と、前記水槽部に接続され、前記水槽部からの排水が流れる排水管部と、前記水槽部の下方に設けられ、前記排水管部が貫通する開口部3aが形成される底部と、を備え、前記底部は、複数のパネル体32…32によって構成される板状の底板体3を備え、前記底板体3において複数の前記パネル体32…32の配置を変更することで、前記底部における前記開口部3aの位置を変更可能である。【選択図】図2