Patent ID: 11940387
Assignee: VERITEQUE USA, INC.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 5:
6. The method of claim 1, wherein the target molecule or ion is a dissolved hydrogen ion and the chemical reagent is selected from a group consisting of cresol red, methyl violet, crystal violet, ethyl violet, malachite green, methyl green, 2-(p-dimethylaminophenylazo)pyridine, paramethyl red, metanil yellow, 4-phenylazodiphenylamine, thymol blue, metacresol purple, orange IV, 4-o-tolylazo-o-toluidine, quinaldine red, 4,4′-bis(4-amino-1-naphthylazo)-2,2′-stilbenedisulfonic acid, p-naphtholbenzein, phenolphthalein, o-cresolphthalein, ethyl bis(2,4-dimethylphenyl)ethanoate, Thymolphthalein, alizarin yellow R, alizarin, p-(2,4-dihydroxyphenylazo)benzenesulfonic acid, sodium salt, 5,5′-indigodisulfonic acid, disodium salt, and 2,4,6-trinitrotoluene, 1,3,5-trinitrobenzene, clayton yellow.