US Patent Issued to Hach on Sept. 30 for "Manganese detection" (Colorado Inventor)

ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,429,480, issued on Sept. 30, was assigned to Hach Co. (Loveland, Colo.).

"Manganese detection" was invented by Angella Nicholle Greenawalt (Fort Collins, Colo.).

According to the abstract* released by the U.S. Patent & Trademark Office: "An embodiment a method for measuring an amount of manganese in an aqueous sample, including: reducing, using a dechlorination reagent, wherein the dechlorination reagent comprises iron(II) and potassium iodide; oxidizing, under an alkaline condition using sodium hydroxide, Mn(II) to Mn(IV) in the aqueous sample, and chelating, using etidronic acid (HEDP), Fe(II) and Fe(III) in the aqueous sample, oxidizing an amount of 3,3',5,5'-tetramethylbenzidine...