Abstract: An apparatus and method is disclosed for transferring biological fluids such as blood and serum from closed containers to multiple receiving containers. The disclosed methods and apparatus perform the transfer of an accurate and precise amount of biological liquid without dilution of the biological liquid, and without splattering of the biological liquid on the walls of the receiving container. Furthermore, the method discloses how to obtain equal concentrations of white blood cells in multiple receiving containers characteristic of their concentration in the sealed container.