A medicinal solution tank (58) in which the medicinal solution (M) is stored, a medicinal solution transferring unit (50) for transferring the medicinal solution (M) from the medicinal solution tank (58) to the endoscope accommodating unit (75) for comparing the concentration of the chemical solution (M) with the first reference concentration, a first adjusting section (73) for increasing the reaction rate of the chemical solution (M), a comparing section (75 ) And the first adjusting unit (73) are connected, and when it is determined by the comparing unit (75) that the concentration of the medical solution (M) is lower than the first reference concentration, the first adjusting unit (73) And a control unit (70) for driving the control unit (70).内視鏡収容部(4)と、薬液(M)が貯留される薬液タンク(58)と、薬液(M)を薬液タンク(58)から内視鏡収容部(4)に移送する薬液移送部(65)と、薬液(M)の濃度と第1基準濃度とを比較する比較部(75)と、薬液(M)の反応速度を上昇させる第1調整部(73)と、比較部(75)及び第1調整部(73)が接続されているとともに、比較部(75)により薬液(M)の濃度が第1基準濃度よりも低いと判定された場合に、第1調整部(73)を駆動する制御部(70)と、を具備している。
