ALEXANDRIA, Va., Nov. 6 -- United States Patent no. 12,461,024, issued on Nov. 4.
"Colorimetric analysis of chlorine bleach" was invented by Oleh Weres (Reno, Nev.).
According to the abstract* released by the U.S. Patent & Trademark Office: "Reaction of bleach with a soluble bromide salt to produce brightly colored hypobromite ion enables easy colorimetric measurement of active chlorine or NaOCl content of bleach. A solution comprising a soluble bromide salt, a suitale buffer and water of dilution is combined with bleach producing a stable color over a wide range of bleach composition. This analytical method is well suited for use outside the laboratory at sites where bleach is stored or used; for example, but not limited to industrial si...