FOX reagent

The FOX reagent, or ferrous oxidation−xylenol orange, is used to measure levels of hydrogen peroxide in biological systems. The reagent is incubated with the sample and absorbance of the product form after a series of oxidation reactions is then measured at a wavelength of 560 nm. The reagent itself is an aqueous solution of ferrous ammonium sulfate, sorbitol, sulfuric acid and xylenol orange.

FOX reagent

The FOX reagent, or ferrous oxidation−xylenol orange, is used to measure levels of hydrogen peroxide in biological systems. The reagent is incubated with the sample and absorbance of the product form after a series of oxidation reactions is then measured at a wavelength of 560 nm. The reagent itself is an aqueous solution of ferrous ammonium sulfate, sorbitol, sulfuric acid and xylenol orange.