Used in environmental testing laboratories for calibration and quantification of trichloroacetic acid (TCA) in water, soil, and air samples. Commonly applied in monitoring drinking water and wastewater to ensure compliance with regulatory limits for chlorinated compounds. Also utilized in analytical methods such as gas chromatography and ion chromatography to validate instrument performance and maintain quality control. Suitable for research studies assessing the formation and degradation of chlorinated organic acids in natural and engineered systems.