Used as an analytical reference standard in environmental testing laboratories to detect and quantify pesticide residues in soil, water, and agricultural products. Commonly applied in chromatographic methods like GC-MS or HPLC for calibration and validation of analytical procedures. Also utilized in research settings to study the degradation, persistence, and metabolite formation of organophosphate pesticides in ecosystems. Due to its stability in solution form, it serves as a reliable control material in quality assurance programs for pesticide monitoring.