Triclosan standard solution is primarily used as a reference material in analytical laboratories to detect and quantify triclosan levels in various samples. It is essential in environmental testing to measure contamination in water, soil, and wastewater, especially near industrial and residential areas. The solution is also used in quality control for consumer products such as antimicrobial soaps, toothpaste, cosmetics, and textiles to ensure compliance with regulatory limits. In research settings, it supports studies on the degradation, toxicity, and bioaccumulation of triclosan. Its standardized concentration allows for accurate calibration of instruments like HPLC and GC-MS, ensuring reliable and reproducible results across testing procedures.