The present invention relates to a device suitable for generating vaporous hydrogen peroxide (H2O2), including a container for holding a liquid solution of hydrogen peroxide (H2O2), the container having an opening, a carrier gas supply, and a fibrous capillary conveyer, capable of drawing up liquid. Further, the invention relates to a process for generating vaporous hydrogen peroxide (H2O2), particularly using said device, as well as to the use of these for disinfection.