ALEXANDRIA, Va., Aug. 12 -- United States Patent no. 12,704,456, issued on Aug. 11, was assigned to HACH LANGE GMBH (Berlin).
"Method for determining ammonium" was invented by Markus Hahn (Berlin), Heinz Rudde (Berlin), Maik Heuwold (Berlin), Markus Lenhard (Berlin), Andreas Golitz (Berlin), Sebastian Minke (Berlin), Andreas Schwenk (Berlin), Andreas Jonak (Berlin), Sven Bergmann (Berlin) and Bas De Heij (Berlin).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method for the determination of a plausibility of a measurement result of a determination of an ammonium content of an aqueous sample. The method includes providing a blue indole dye mixture of the aqueous sample, determining a first extinction value o...