The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 23, 2011
Filed:
Dec. 16, 2005
Keith J. Albert, Auburn, ME (US);
John Thomas Bradshaw, Gorham, ME (US);
Alex L. Rogers, Gray, ME (US);
Keith J. Albert, Auburn, ME (US);
John Thomas Bradshaw, Gorham, ME (US);
Alex L. Rogers, Gray, ME (US);
Artel, Inc., Westbrook, ME (US);
Abstract
A method for determining the volume of a test liquid aliquot used to calibrate a liquid delivery device. The method is useful for determining the volume of an aliquot of a test liquid which is complex, non-aqueous or both. A mixture contains the test liquid and a stock solution including a first dye, the first dye having absorbance characteristics which are measurably distinguishable from the absorbance characteristics of a second dye. The mixture is mixed with a diluent including the second dye to form a sample solution used to measure absorbances of the first dye and the second dye. The test liquid and the stock solution are combined gravimetrically in a controlled ratio so that the flow characteristics of the test-stock mixture correspond to the flow characteristics of the test liquid and without affecting the ability to distinguish the absorbance characteristics between the first dye and the second dye.