Patent ID: 6620383
Filing Date: 2003-09-16
Classification: B01J,B01L,C40B,G01N,Y10T

Abstract:
A device for storing a liquid and dispensing metered, nanoliter or microliter amounts of the liquid into a liquid-receiving unit, the device comprising:a sealed, tapped reservoir comprising an integrated metering tap, the tap comprising: (a) a metering tube translatable between a fill position inside the reservoir and an expel position outside the reservoir, the metering tube comprising (1) a tube end closure in a lower portion of the tube, (2) a port above the tube end closure, and (3) a piston in an upper portion of the tube, the piston being movable within the tube between a down position that seals the port and an up position above the port, and (b) a fluid output channel having an upper portion in fluid communication with the port when the tube is in the expel position and a lower portion terminating in a nozzle tip.