An apparatus for detecting a predefined fill level of a medium in a container having a lid by means of a conductive measuring system, which has at least two measuring electrodes extending into the container. A fuel injection valve which is capable of injecting fuel for each cylinder is provided. The carton is loaded on a mobile cart and the one part adhesive is supplied to a pumpmixer without exposure to moisture in the atmosphere. The panels include first overlying portions subject to relatively low stress that extend across the inflatable device when inflated.