Thermo Scientific™ Pierce™ Peroxide Assay Reagent B

In these assays, hydroperoxides convert the Fe2+ to Fe3+ at acidic pH. With the aqueous-compatible formulation, peroxide first reacts with sorbitol, converting it to a peroxyl radical, which in turn initiates Fe2+ oxidation to Fe3+. In the lipid compatible formulation, the peroxide converts the Fe2+ to Fe3+ directly. In a sulfuric acid solution, the Fe3+ complexes with the xylenol orange (XO) dye to yield a purple product having an absorbance maximum at 560nm. Peroxide levels in test samples can be determined by calculation from the know extinction coefficient of the XO-Fe complex or by reference to a standard curve prepared with hydrogen peroxide solution.

Highlights:

• Peroxides – detects and measures hydrogen peroxide (H2O2) levels in biological and other liquids samples

• Convenient – no proprietary reagents involved but the ready-to-use kits remove the variability, difficulty and added expense of formulating the reagents yourself

• Versatile – quantitation by calculation from the extinction coefficient or by reference to a standard curve enables the method to be easily adapted to a variety of sample types and testing purposes

• Two formulations – choose the aqueous-compatible kit for maximum sensitivity with non-lipid samples; choose the lipid-compatible kit for best results with lipid-containing samples

Recommended for:

General hydrogen peroxide (H²O²) measurement in protein samples; Quantitation of peroxides in detergents; Assessment of the effects of peroxides on cellular activity; Determination of protein glycation; Measurement of peroxide accumulation in lipids