Problem to be solved: to provide a vegetable sterilizing apparatus capable of accurately measuring ozone concentration in a working environment.The concentration of ozone in the environment for sterilizing vegetables is measured by the sterilizing solution containing ozone water.A light source 172 for emitting the measurement light, a first measuring part 171 for measuring the quantity of light of the measurement light transmitted from the working environment, and a second measuring part 171 for measuring the quantity of light of the measurement light passing through a second gas excluding ozone from the first gas, and a first gas and a second gas are included The concentration of ozone based on the measurement result of the first measuring part and the measurement result of the second measuring part with the adjustment part 178 for adjusting the amount of the absorbent component to the same quantity for the measurement light from the vegetable, and the amount of the absorption component adjusted, andThe calculation section CL is provided.Diagram【課題】作業環境中のオゾン濃度を高精度に測定できる野菜殺菌装置を提供する。【解決手段】オゾン水を含む殺菌液により野菜を殺菌する環境中のオゾン濃度を測定する。測定光を出射する光源装置172と、作業環境から導入した第1ガスを透過する前記測定光の光量を測定する第1測定部171と、第1ガスからオゾンを除いた第2ガスを透過する測定光の光量を測定する第2測定部171と、第1ガスと第2ガスとに含まれる、野菜由来の測定光に対する吸光成分の量を同一量に調整する調整部178と、吸光成分の量が調整された、第1測定部の測定結果と第2測定部の測定結果とに基づいてオゾンの濃度を算出する演算部CLとを備える。【選択図】図4
