Patent ID: 7437914

Claim:
A device for use in testing a liquid in a microfluidic testing system, comprising: a disk defining an axis of rotation and configured to centripetally manipulate the liquid as the disk is rotated about the axis of rotation, the disk including: a testing chamber configured to receive the liquid to be tested, a liquid inlet fluidly coupled to the testing chamber to allow ingress of the liquid into the testing chamber, and a gas outlet fluidly coupled to the testing chamber to allow egress of gas out of the testing chamber, wherein the gas outlet has an elevation that is higher than an elevation of the liquid inlet such that, as the disk is rotated about the axis of rotation, gas is expelled out of the testing chamber through the gas outlet, thereby reducing a presence of gas bubbles in the test chamber, wherein the gas outlet is formed in an uppermost section of the testing chamber, and wherein the liquid inlet is formed in a lowermost section of the testing chamber.