Used in analytical chemistry for calibration of instruments such as ion-selective electrodes and spectrophotometers to accurately measure iodide concentrations in samples. Commonly applied in environmental testing to determine iodide levels in water and soil. Employed in pharmaceutical quality control for validating the iodine content in medicinal products. Supports research in thyroid function studies due to iodide’s role in hormone synthesis. Also utilized in educational laboratories for teaching titration techniques and standardization procedures.