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:
Feb. 17, 2015
Filed:
Mar. 14, 2013
Ecolab Usa Inc., Naperville, IL (US);
Arthur J. Kahaian, Chicago, IL (US);
Alexandra Knoth, Aurora, IL (US);
Hui Li, Naperville, IL (US);
Rodney H. Banks, Aurora, IL (US);
Joe L. Schwartz, Aurora, IL (US);
Sascha J. Welz, Chicago, IL (US);
Ecolab USA, Inc., Naperville, IL (US);
Abstract
Provided are automated methods for measuring soluble magnesium concentration in water using fluorescence. The methods employ the use of a pH-buffered liquid and a magnesium coordinating fluorescing reagent. In certain embodiments, the methods may further employ measuring total hardness concentration of the water by displacing any soluble calcium with soluble magnesium and then re-measuring the soluble magnesium concentration. Optionally, the soluble calcium concentration can be determined by subtracting the measured soluble magnesium concentration from the measured total hardness concentration.