Patent ID: 9592505
Date: 2017-03-14
CPC Classifications: B01L,Y10T

Claim:
1. A device comprising: a microfluidic system, wherein the microfluidic system comprises: a first plug comprising a first fluid and a second plug comprising a second fluid contained in the microfluidic system, wherein the first and second plugs are separated by a gas, and wherein the first plug, the second plug, and the gas are present in the microfluidic system prior to first use of the device; an inlet and an outlet; a reaction area positioned between the inlet and the outlet; a microfluidic channel in fluid communication with and downstream of the reaction area, the microfluidic channel comprising a first channel portion having a first cross-sectional area; and a flow constriction region positioned downstream of the first channel portion and upstream of the outlet, wherein the flow constriction region has a second cross-sectional area, the second cross-sectional area being less than 250 μm