Microfluidic chip

Microfluidic chip comprising at least two units for droplet formation, each unit comprising

• a first supply channel for supplying a first phase, comprising a first inlet for the inlet of the first phase;
• a second supply channel for supplying a second phase, comprising a second inlet for the inlet of the second phase;
• a discharge channel for discharging a product phase, comprising an outlet for the outlet of the product phase;
• wherein
• the first and second supply channel converge at a junction to the discharge channel;
• the first supply channel has a hydraulic resistance Rs1 to flow of a particular fluid and a minimal cross-sectional surface area MSAs1 along at least part of the supply channel;
• the second supply channel has a hydraulic resistance Rs2 to flow of the particular fluid and a minimal cross-sectional surface area MSAs2 along at least part of the supply channel;
• the discharge channel has a hydraulic resistance Rd to flow of the particular fluid and a minimal cross-sectional surface area MSAd along at least part of the discharge channel;
• wherein the microfluidic chip comprises
• a first manifold for simultaneously supplying the first phase to the first supply channels of the units;
• a second manifold for simultaneously supplying the second phase to the second supply channels of the units;
• and
• wherein Rs1≥2×Rd and/or Rs2≥2×Rd.