Patent ID: 6193471
Filing Date: 2001-02-27
Classification: B01F,B01L,G01N

Abstract:
A system for delivering a liquid sample to a point of use which comprises:a storage volume in fluid communication with a gas,an inlet capillary conduit for receiving a liquid sample in fluid communication with said storage volume,an outlet capillary conduit for receiving a liquid sample in fluid communication with said storage volume,a drain capillary conduit,said storage volume being dimensioned to form a meniscus on a capillary liquid stream passing within said storage volume,said outlet capillary conduit being in fluid communication with said storage volume,a capillary gate in fluid communication with said drain capillary conduit, and in fluid communication with a gas, and being dimensioned to permit liquid to flow through said capillary gate between said outlet capillary conduit and said drain capillary conduit,a means for controlling gas pressure in said storage volume,and a means for controlling pressure in said inlet capillary conduit.