Used in environmental monitoring and water quality analysis to detect and quantify common anions such as fluoride, chloride, bromide, nitrate, sulfate, phosphate, and nitrite in drinking water, wastewater, and natural water sources. These mixtures serve as calibration standards in ion chromatography, ensuring accurate measurement of ion concentrations. They are also applied in agricultural testing to assess soil and irrigation water for nutrient and contaminant levels, particularly nitrates and phosphates that affect crop growth and water runoff. In industrial processes, the mixture helps monitor corrosion by-products like chloride and sulfate in cooling systems. Additionally, it supports research in atmospheric chemistry by analyzing anion content in rainwater and aerosols related to pollution and acid rain studies.