A medical fluid microflow assembly having an assembly fluid inlet and anassembly fluid outlet, and a mandrel havinga curved exterior surface, the mandrel being positioned within an cavity of ahousing so that the exterior surface of the mandrel issubstantially parallel to an interior surface of the cavity, and at least oneprotrusion positioned helically around and extending fromthe interior surface of the cavity, each protrusion abutting the exteriorsurface of the mandrel to form a sealed fluid channel whichhas a channel inlet positioned proximate to the assembly fluid inlet and achannel outlet positioned proximate to the assembly fluidoutlet, the exterior surface of the mandrel and the interior surface of thecavity having a minimal or neutral triboelectric value withrespect to a fluid.
