Abstract: A container for receiving liquids with different concentrations of an active substance that is to be administered or dosed, wherein the container includes a hollow body and a displaceable element for expelling the liquid is located for longitudinal movement in the hollow body, and wherein the cross-sectional surface area of the hollow body is inversely proportional to the concentration of the substance, such that, with identical strokes or longitudinal movements of the displaceable element, the discharged amount of active substance remains independent of the concentration of the substance in the container.

Abstract: A method for determining a position or location for delivering a substance including providing at least one piece of reference information or a reference point, determining a location for the delivery based on the piece of reference information or in relation to the provided reference point, and outputting the determined location. The invention encompasses a device for use in the method, the device including a memory which stores reference data or patient-specific data, a computer which determines a position based on the data stored in the memory, and an output unit which outputs the determined position.