A system (100) for hydrogen peroxide treatment is provided. The system comprises a supply (110) of hydrogen peroxide, a supply (120) of water, and an intermediate storage (130) for hydrogen peroxide being in fluid communication with the supply (110) of hydrogen peroxide and the supply (120) of water, wherein the system (100) further comprises a control unit (140) being connected to said supply (110) of hydrogen peroxide and the supply (120) of water for controlling the concentration of hydrogen peroxide in the intermediate storage (130).