Application of fluids

A device for application of a concentrate in diluted form, comprising:

• at least one concentrate container comprising a concentrate, or means for connecting at least one concentrate container comprising a concentrate to the device,
• a container comprising a diluent for diluting the at least one concentrate,
• at least one outlet,
• transporting means for transporting the at least one concentrate from the at least one concentrate container in the direction of the at least one outlet,
• one or a plurality of concentrate lines through which the at least one concentrate passes when it is transported from the at least one concentrate container in the direction of the at least one outlet,
• at least one pressure regulator to regulate volume flows of the diluent from its container in the direction of the at least one outlet,
• a mixing element for mixing the at least one concentrate with the diluent and
• means for recycling residual amounts of concentrate remaining in the concentrate lines after an application to the at least one concentrate container from which the concentrate was removed, and
• at least one memory unit connected to the respective at least one concentrate container to determine and record the residual amounts remaining in the at least one concentrate container after an application.

A method for application of a concentrate in diluted form, comprising the following steps:

• transporting a concentrate from a plurality of concentrate containers through one or a plurality of concentrate lines in the direction of at least one outlet,
• diluting the concentrate with a diluent and
• applying the concentrate diluted with the diluent,
• wherein after an application, at least a portion of residual amounts of concentrate remaining in the concentrate lines is recycled to the plurality of concentrate containers, wherein the plurality of concentrate containers comprise different concentrates, wherein the different concentrates can be transported via concentrate lines in the direction of the at least one outlet and can flow both through joint concentrate lines that they share with at least one further concentrate or through individual concentrate lines that they do not share with a further concentrate, wherein after an application of a plurality of concentrates, the residual amounts of the respective concentrate remaining in the individual concentrate lines are recycled to the corresponding concentrate container, and the residual amounts of concentrate remaining in the joint concentrate lines are optionally recycled to one or a plurality of collecting containers.