Used as a reference standard in analytical laboratories to quantify triclosan levels in consumer products such as antibacterial soaps, toothpaste, and cosmetics. Ensures accurate calibration of instruments like HPLC and GC-MS for quality control and regulatory compliance testing. Also employed in environmental monitoring to measure triclosan residues in water, soil, and wastewater samples. Supports research on antimicrobial resistance and endocrine disruption by providing precise concentrations for experimental studies.