Patent ID: 6592825
Filing Date: 2003-07-15
Classification: B01J,B01L,C40B,G01F,G01N,Y10T

Abstract:
A microvolume liquid handling system for dispensing small quantities of liquids, comprising:pumping means for controlling the pressure and flow of a first liquid; microdispenser means for dispensing microvolumes of a second liquid, said first liquid and said second liquid separated by a compressible fluid; a sensor for converting pressure changes in at least one of said first liquid and said second liquid into a signal; tubing means for connecting said pumping means to said sensor and said sensor to said microdispenser means; and means for converting the signal into an indication of fluid volume dispensed; vibrating means for vibrating said microdispenser means at a frequency sufficiently high to dislodge foreign material adhering to said microdispenser.