The University of Laval of Laval, Canada, and the University of California of Oakland have received US Patent No. 8,534,319, "Serial siphon valves for fluidic or microfluidic devices." The devices described rely on a co-radial arrangement of serial siphon valves each separated by a capillary valve to save radial space in a fluidic system. Such serial siphon valves allow the sequential distribution of liquids in the system upon application of successive centripetal accelerations and decelerations applied to a rotary platform.

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