Vivaflow 50 and 200 systems are ready-to-use ultrafiltration modules for crossflow filtration of samples up to 5 liters. These novel systems offer a standard of ease of use, performance, flexibility and economy which is unrivaled by any laboratory or pilot scale filtration system in the market. Ideal for applications such as desalination and the concentration of proteins, virus, and colloids/nanoparticles. Near total recoveries achievable with a single rinse (500 µl hold up volume).