Used in titration analysis for determining the concentration of oxidizing agents such as iodine, chlorine, and hypochlorite. Commonly applied in water treatment to measure residual chlorine levels. Employed in pharmaceutical testing and quality control for assay of substances like potassium iodate and copper sulfate. Also utilized in environmental labs to analyze dissolved oxygen in water samples via the Winkler method. Suitable for standardization of iodine solutions in redox titrations.