PROBLEM TO BE SOLVED: To provide an indicator for washing evaluation, accurately detecting abnormality in the parameter of a washing device used for washing a medical instrument.SOLUTION: A coating film including a water-soluble vegetable protein as a pseudo contaminant is formed on the surface of a sheet base material of the indicator.COPYRIGHT: (C)2009,JPO&INPIT【課題】医療器材洗浄に用いる洗浄装置のパラメーター異常を的確に検出し得る洗浄評価用インジケーターを提供する。【解決手段】シート基材の表面に、疑似汚染物としての水溶性の植物性蛋白質を含む塗膜が形成されてなる。【選択図】なし