The first purely volumetric dispensing system for precise meter mix dispensing and applicating minimum quantities of 2-component fluids and pastes. With targeted controlling of the single components the mixing ratio can be adjusted up to the second place after the decimal point. Independent from viscosity fluctuations, a clean and reliable dispensing can be achieved. Controlled thread breakage, thanks to the suck-back effect, and other functions, distinguish the preeflow mixing dispenser of the eco-DUO series from other 2 part dispensing systems. With their simple and safe operation, the two component dispensing systems can be used flexibly. Experience precise mechanics combined with the latest digital control unit.