Ratiometric dilution devices and methods

摘要: Substantially sealed microfluidic devices for performing pipettorless ratiometric dilution are provided. In one embodiment, valves disposed between and permit selective fluid communication multiple chambers of a series chambers. another mixing chamber receives from an inlet port is in donative with receiving each having small volume than the chamber. Active means may be provided, including moveable magnetic elements, sonication, channels coupled transport means. A material system used non-electrokinetic transporting sample, diluent, combinations thereof within device.