Our molecular weight testing experts begin ASTM D5296 testing by dissolving the polystyrene sample in a solvent, such as tetrahydrofuran. The solution is then injected into the chromatography system, which includes a column packed with porous material. As the polymer solution flows through the column, larger molecules elute more quickly, and smaller molecules penetrate the pores. The resulting chromatogram is analyzed to determine the molecular weight distribution, with calibration performed by referencing polystyrene standards of known molecular weights. This test method is widely used in quality control to ensure polystyrene-based products meets the required specifications for industrial applications like packaging, films, and plastics. This method is regularly used in research and development, helping chemists and engineers identify variations in polymerization conditions and how they affect molecular weight and physical properties. By providing detailed insights into the molecular structure, ASTM D5296 testing provides information that helps ATS’ clients optimize their processes and ensure the performance and reliability of polystyrene-based products.