Nitric acid standard is widely used in analytical chemistry for the calibration of equipment and the standardization of other solutions, ensuring accurate and precise measurements in laboratory settings. It plays a crucial role in titrations, particularly in determining the concentration of bases or other substances in a sample. In environmental testing, it is employed to prepare samples for trace metal analysis, aiding in the detection of pollutants in water, soil, and air. Additionally, it is utilized in the preparation of standard reference materials for quality control in various industries, including pharmaceuticals and food production. Its strong oxidizing properties also make it valuable in research and development for synthesizing and studying chemical compounds.