Used primarily in environmental testing and research, this chemical serves as a reference standard for the detection and quantification of polychlorinated biphenyls (PCBs) in various samples. It is crucial in analyzing soil, water, and air to assess contamination levels and ensure compliance with environmental regulations. Additionally, it aids in studying the persistence, distribution, and toxicological effects of PCBs in ecosystems. Laboratories rely on it for calibrating instruments and validating analytical methods to ensure accurate and reliable results.