Abstract: Device for treating air and/or surfaces with treatment substance for disinfecting, can include a blower for sucking and blowing air, at least one conveying device for conveying the treatment substance, and at least one feed nozzle for feeding the treatment substance, wherein the feed nozzle is connectable to the conveying device via a connection line. The at least one feed nozzle can be arranged in the air flow of the blower, wherein the at least an end of a feed nozzle is removable and can also be arranged at a distance from the device, and can be connected to a ventilation duct of a ventilation and/or air-conditioning system of an environment. Additionally or alternatively, at least one further feed nozzle, which is connected or connectable to the conveying device via a connecting line, can be connected to a ventilation duct of a ventilation and/or air-conditioning system of the environment.

Abstract: The invention relates to an injection device for injecting an injection medium into a volumetric flow of a line system. The injection device comprises a housing with at least one first compartment which is set up to receive an injection medium, and at least one second compartment which is spatially separated from the first compartment, both compartments having an injection unit.

Abstract: The invention relates to an injection device for injecting an injection medium into a volumetric flow of a line system. The injection device comprises a housing with at least one first compartment which is set up to receive an injection medium, and at least one second compartment which is spatially separated from the first compartment, both compartments having an injection unit.