Patent ID: 6079283
Filing Date: 2000-06-27
Classification: B01J,B01L,C40B,G01N,Y10T

Abstract:
A method for aspirating at least one sample liquid through a tip opening of a dispenser into the dispenser passage and ejecting droplets of said sample liquid from said passage through the tip opening, said method comprising:(a) providing a system liquid into a closed container communicating with said dispenser passage;(b) filling the dispenser passage with said system liquid;(c) contacting the tip opening of said dispenser passage with a first sample liquid;(d) moving said system liquid in said dispenser passage away from said tip opening so as to aspirate said first sample liquid into said passage;(e) removing said tip opening from contact with first sample liquid;(f) constricting the volume of said passage so as to produce and eject a droplet of said first sample liquid;(g) allowing the volume to return to its pre-constricted volume;(h) repeating steps (f) and (g) until a desired volume of the first sample liquid is ejected.