Metribuzin impurities are unwanted substances that can be present in the chemical compound of Metribuzin, a herbicide used to control weeds in crops such as soybean, potato, and tomato. These impurities can affect the efficacy and safety of the herbicide, and may also pose health and environmental risks if not properly managed. Therefore, it is important to monitor and control the levels of Metribuzin impurities in agricultural products and ensure compliance with regulatory standards.