Virongy’s Low-Speed Viral Concentration Kit is designed to enhance virus titer, maximize transduction efficiency and increase particle purity. Our propriety Viral Concentration and Resuspension Buffers come sterile and ready-to-use for concentrating viruses, pseudoviruses, nanoparticles (50-200nm) and extracellular vesicles. The Viral Resuspension Buffer is cell culture and animal safe, for research purposes only. The concentrated viral particles have up to 10x the transduction efficiencies and the higher purity enhances cryo-electron microscopy imaging. The low-speed protocol does not require an ultra-centrifuge and can be scaled to any size of particle preparation.