Patent ID: 8845981
Filing Date: 2014-09-30
Classification: B01L,F16K,Y10S,Y10T

Abstract:
1. A device for volumetric metering a liquid biologic sample, comprising: an initial chamber configured so that liquid sample disposed in the chamber is subject to capillary forces, which initial chamber has a volume; a second chamber in fluid communication with the initial chamber, which second chamber has a volume, and is configured so that liquid sample disposed in the chamber is subject to capillary forces; a third chamber in fluid communication with the initial chamber, which third chamber has a volume, configured so that liquid sample disposed in the chamber is subject to capillary forces; a first valve having a first burst pressure, which first valve is in fluid communication with the second chamber; a second valve having a second burst pressure, disposed between, and in fluid communication with, the initial chamber and the third chamber; and a third valve, having a third burst pressure, in fluid communication with the third chamber; wherein the first burst pressure is greater than the second burst pressure or the third burst pressure.