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Patent
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G01G 19/22 (2006.01) G01G 15/00 (2006.01) G01G 17/06 (2006.01) G01N 1/38 (2006.01) G01N 9/04 (2006.01) G01N 35/00 (2006.01)
Patent
CA 2072255
2072255 9207760 PCTABS00013 A method and system (10) for dispensing a fluid to provide a predetermined weight percent concentration of a sample material (22) to the fluid (24). An estimated density value for the fluid is used to determine the volume of fluid to dispense in an initial injection of fluid which is less than the total volume of fluid required to achieve the predetermined weight percent concentration. A working fluid density is then determined from the volume of fluid dispensed and a measurement of the weight of the fluid dispensed. The working density is then used to determine the volume of fluid to dispense in a subsequent injection. Preferably, at least three fluid injections are performed, and the working density is determined after each fluid injection.
Beyer John O.
von Nehring Q. Gordon
Smart & Biggar
The Dow Chemical Company
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