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Precision liquid dispensing system

  • US 20040014238A1
  • Filed: 01/17/2003
  • Published: 01/22/2004
  • Est. Priority Date: 01/24/2002
  • Status: Active Grant
First Claim
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1. A system for dispensing microdrops of reagent in small, precisely metered quantities, said system comprising:

  • a reagent reservoir containing a fluid reagent to be dispensed, means coupled to said reservoir for maintaining said reagent under a controlled pressure, multiple nozzles in fluid communication with said reservoir for dispensing microdrops of said reagent, multiple solenoid valves connected between said reservoir and said nozzles for controlling the flow of said reagent from said reservoir to said nozzles, each of said valves being connected to one of said nozzles, and control means connected to said solenoid valves for supplying electrical pulses separately to each of said solenoid valves for separately controlling the opening and closing of each valve to dispense predetermined quantities of said reagent through each of said nozzles.

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