Used in environmental monitoring and water quality testing to detect and quantify halide ions and oxyanions in industrial effluents, drinking water, and natural water sources. The mixture helps in identifying contamination from agricultural runoff, industrial discharges, and disinfection byproducts. It serves as a standard in ion chromatography for simultaneous analysis of anions, ensuring accurate calibration and reliable measurement in regulatory compliance and research applications. Also applied in monitoring wastewater treatment processes and assessing soil leachates for pollutant levels.