Patent ID: 6919046
Filing Date: 2005-07-19
Classification: B01F,B01J,B01L,B82Y,G01N,Y10T

Abstract:
1. A microfluidic device for passively mixing at least two fluids for analysis, the device comprising a plurality of device layers defining: a first fluidic input; a first junction or manifold region in fluid communication with the first fluidic input; a first plurality of unequal impedance branch channels in fluid communication with the first junction or manifold region; a second fluidic input; a second junction or manifold region in fluid communication with the second fluidic input; a second plurality of unequal impedance branch channels in fluid communication with the second junction or manifold region; a plurality of mixer regions in fluid communication with the first plurality of unequal impedance branch channels and the second plurality of unequal impedance branch channels, wherein the plurality of mixer regions, the first plurality of unequal impedance branch channels, and the second plurality of unequal impedance branch channels are disposed within the plurality of device layers so as to permit simultaneous and combination of a first fluid and a second fluid in a plurality of different predetermined mixing ratios; and a detection region in fluid communication with the plurality of mixer regions.