Xanthine oxidase for calibration of the oxygen electrode apparatus.
D004566:Electrodes; D004864:Equipment and Supplies; D008722:Methods; D010100:Oxygen / Q000032:analysis*; D011048:Polarography; D013053:Spectrophotometry; D014969:Xanthine Oxidase
D014969:Xanthine Oxidase; D010100:Oxygen