Used in analytical chemistry for calibration of instruments such as atomic absorption spectrometers and ICP-OES to determine strontium content in samples. Commonly applied in environmental testing to measure strontium levels in water, soil, and wastewater. Employed in geological studies for elemental analysis of rock and mineral samples. Also utilized in biological and clinical research to study strontium metabolism and its effects on bone tissue. Serves as a reference standard in quality control for laboratories and industrial processes involving alkaline earth metals.