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:
Oct. 06, 2020
Filed:
Feb. 15, 2019
Applicant:
Hach Company, Loveland, CO (US);
Inventors:
Melanie Ann Roth, Loveland, CO (US);
Angella NIcholle Greenawalt, Fort Collins, CO (US);
Assignee:
Hach Company, Loveland, CO (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N 31/22 (2006.01); G01N 33/18 (2006.01); G01N 21/31 (2006.01);
U.S. Cl.
CPC ...
G01N 31/22 (2013.01); G01N 21/31 (2013.01); G01N 33/1813 (2013.01); G01N 33/1826 (2013.01);
Abstract
An embodiment provides a method for measuring aluminum concentration in an aqueous sample, including: preparing a chromeazurol S indicator solution; placing the chromeazurol S indicator solution in a sample containing aluminum, wherein the placing causes the chromeazurol S to chelate aluminum within the sample creating a colored complex; and measuring, using colorimetric techniques, a concentration of aluminum within the sample, wherein the measuring comprises measuring an absorbance at a wavelength for the colored complex. Other embodiments are described and claimed.