Used as a calibration standard in size-exclusion chromatography (SEC) and gel permeation chromatography (GPC) to determine the molecular weight distribution of polysaccharides and other macromolecules. Provides accurate and reliable reference points for system calibration, ensuring precision in analyzing polymer size and polydispersity. Commonly applied in pharmaceutical, biomedical, and biotechnology industries for quality control of dextran-based products such as plasma expanders, drug delivery systems, and diagnostic reagents. Also supports research in polymer science and glycobiology where precise molecular weight characterization is critical.