Polystyrene standard is widely used in the field of analytical chemistry as a calibration material for size exclusion chromatography (SEC) and gel permeation chromatography (GPC). It helps in determining the molecular weight distribution of polymers by providing a known reference. In material science, it serves as a model compound for studying polymer properties, such as thermal behavior and mechanical strength. Additionally, it is employed in research and development to validate analytical instruments and methodologies, ensuring accurate and reproducible results. Its consistent properties make it a reliable tool for quality control in polymer manufacturing processes.