Bio-Nano Magnetic Bead Dispersion is provided by the Gansu Academy of Sciences. Bio-nano magnetic beads are a new type of biomedical material, which have a wide range of application scenarios in biological separation, biosensing, disease detection and diagnosis, magnetic targeted drug delivery and other fields due to their rich magnetic properties, nano material properties and good biocompatibility. Application products with bio-nano magnetic beads as the core raw material or consumables (such as biological separation kits for nucleic acid extraction, protein purification, cell sorting, etc., magnetic particle chemiluminescence detection kits, in vitro diagnostic reagents, and fully automatic nucleic acid and protein extraction platforms) can be directly used by users in multiple fields such as third-party testing institutions, hospitals, biopharmaceuticals, disease control, entry-exit inspection, food safety testing, and environmental monitoring.