Used in titration procedures to determine chloride, bromide, and iodide content in samples through precipitation reactions with mercury(II) ions. Commonly applied in water quality testing to measure halide impurities and in pharmaceutical analysis for assay of chloride-containing compounds. Also utilized in industrial laboratories for quality control of raw materials where precise quantification of anions is required. The standardized mercury nitrate solution ensures accurate and reproducible results in volumetric determinations due to its precise concentration.