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:
Jun. 11, 2019
Filed:
Jul. 01, 2016
Ecolab Usa Inc., St. Paul, MN (US);
Hui Li, Bolingbrook, IL (US);
Alexandra Knoth, Aurora, IL (US);
Joe Schwartz, Aurora, IL (US);
Christopher Brant Wilson, Naperville, IL (US);
Arthur Kahaian, Chicago, IL (US);
Ecolab USA Inc., St. Paul, MN (US);
Abstract
Disclosed are methods that can be used to automatically calibrate a fluorescence-measuring instrument capable of continuously measuring the concentration of hardness in process water. The calibration method is used to compensate for drift of instrument and equipment, changes of operational conditions, and contamination of reagents and calibration standards. Calibration of the fluorescence-measuring instrument using the present calibration method improves both accuracy and repeatability for subsequent hardness concentration measurements.