Abstract: A microfluidic device and a system comprising such a microfluidic device or chip and a method for mixing and distributing fluids using said chip or system, wherein the microfluidic device for mixing and distributing fluids, formed by bonding of a first substrate and a second substrate, wherein open formations on bonded the first and second substrate form at least part of a microfluidic channel network comprising at least one microstructure comprising a single receiving chamber which is connected by at least one first channel extending from said single receiving chamber leading into an at least first target chamber, wherein the at least one first channel extends clockwise or counter clockwise from the single receiving chamber and is bowed in a clockwise or counter clockwise direction.