The present application relates to an exhaust-gas aftertreatment device and to a method for exhaust-gas aftertreatment. In one aspect of the invention, methods to layout an integrated circuit are based on placing and routing cells along paths. A common passageway extends through the sprayer device and volume meter through which liquid flows from the inlet end portion of the volume meter, past the gauge member, and exits the sprayer device at a head end thereof. The invention is also to processes for forming these features, preferably through a direct write printing process.