Patent ID: 6802228
Filing Date: 2004-10-12
Classification: H01J

Abstract:
A system for delivering small liquid samples to an analyzer, said system comprising at least one delivery channel, said delivery channel including:(a) an electro-mechanically controlled microsyringe pump having a plunger slidably moveable in sealing contact with a barrel, said pump operative to aspirate and eject a sample liquid; (b) a tube in fluid communication with said barrel, said tube including a two-way valve having a first path and a second path; and (c) an injection port having an input and an output, said input operative to receive and mix said sample liquid, and said output couplable to said analyzer; wherein said first path is coupled to a diluent liquid tube, said diluent liquid tube operative to channel a diluent liquid into said barrel; and wherein said second path is coupled to a sample liquid tube, said sample liquid tube operative to take up said sample liquid, to deliver said sample liquid to said injection port, and to deliver said diluent liquid to said input of said injection port.