Metribuzin standard solution is primarily used in analytical laboratories for the calibration and validation of instruments that detect and quantify metribuzin residues in environmental and agricultural samples. It serves as a reference standard in chromatographic techniques such as HPLC and GC-MS to ensure accurate measurement of metribuzin levels in soil, water, and crops. This is critical for monitoring pesticide runoff, assessing environmental contamination, and ensuring compliance with food safety regulations. The standard solution also supports research on herbicide degradation and metabolism in plants and ecosystems.