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. 01, 2023
Filed:
Aug. 09, 2018
Hach Lange Gmbh, Berlin, DE;
Andreas Golitz, Kamp-Lintfort, DE;
Andreas Jonak, Meerbusch, DE;
Michael Kussmann, Duesseldorf, DE;
Axel Leyer, Moenchengladbach, DE;
Andreas Schwenk, Brueggen, DE;
Markus Hahn, Kempen, DE;
HACH LANGE GMBH, Berlin, DE;
Abstract
A method for determining a phosphate concentration in a water sample includes providing the water sample, adding a first acid to the water sample to obtain a second water sample in which a concentration of the first acid is at least 0.5 wt.-%, performing a first photometric measurement of the second water sample, adding a coloring component to the second water sample to obtain a third water sample, performing a second photometric measurement of the third water sample, and calculating the phosphate concentration from a difference between the first photometric measurement and the second photometric measurement.