Abstract: A container for use in a microwave apparatus, in particular for heating, drying, disinfecting and/or sterilizing of materials, objects, liquids or the like, includes a lid securely attachable via a pressure lock to the container and including connections for allowing attachment of various valves, pumps etc. to monitor and influence conditions in the container. The connections are self-sealing plug connector pipes which are engageable with a complementary coupler piece of the microwave apparatus. The microwave apparatus includes an injector unit by which water or other liquid is introduced into the material to be treated, with the amount of injected water being dependent on the water content of the material. The injector unit includes a nozzle head which projects into the treatment chamber of the microwave apparatus and incorporates sensors for determining physical and/or chemical parameters.