Used in analytical laboratories for calibration of ion-selective electrodes and spectrophotometric instruments to accurately measure fluoride concentrations in water, beverages, and industrial samples. Commonly applied in environmental monitoring to ensure compliance with drinking water safety regulations. Also utilized in quality control processes within the pharmaceutical and dental product industries to verify fluoride content in toothpaste, mouth rinses, and supplements. Supports research in geochemistry and hydrology for studying fluoride levels in natural water sources and soil extracts.