The eco-DUOMIX precision volume dispensing unit made by preeflow enables mixing and dosing of the smallest quantities of 2-component fluids and pastes.The dead space optimized mixing capsule used, instead of a mixing spiral, is available as a consumable and is installed directly at the outlet of the dispenser.Precise application of even the smallest sealing beads is achieved by means of an exchangeable dosing needle, which is mechanically connected to the mixing capsule.