A Detailed Comprison of Analytical Methods for Residual Ozone Measurement

Abstract
Eight analytical methods for the determination of residual ozone in water are compared on ease of calibration of the reagent solutions, the stability of the reagent solutions, the stability of the titer of the ozonated reagent solutions, and the validity of the ozone titer. The Indigo method and the arsenic–(III) direct oxidation method are the methods of choice.