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:
Jan. 08, 2013
Filed:
Mar. 31, 2010
Eugene Tokhtuev, Duluth, MN (US);
Christopher J. Owen, Duluth, MN (US);
Soren K. Tryggestad, Brooklyn Park, MN (US);
Anna Pilipchenko, Duluth, MN (US);
Eugene Tokhtuev, Duluth, MN (US);
Christopher J. Owen, Duluth, MN (US);
Soren K. Tryggestad, Brooklyn Park, MN (US);
Anna Pilipchenko, Duluth, MN (US);
Ecolab USA Inc., St. Paul, MN (US);
Abstract
Some embodiments provide methods for calibrating a fluorometer in order to account for one or more optical properties of a water sample affecting fluorescence measurements. In some cases one or more calibration solutions are prepared with sample water from a specific field site. Fluorescence measurements are taken from a water sample and one or more of the calibration solutions, and calibration parameters are determined based on the measurements. In some cases a calibration solution is prepared by spiking sample water to include a higher concentration of a fluorescent tracer and measurements are taken to characterize a calibration slope coefficient. In some cases a calibration solution is prepared by adding an acid and measurements are taken to characterize a background fluorescence in the sample.