Fluid collection, separation and dispensing tube

A tube for collection and separation of a fluid having a lighter specific gravity phase and a heavier specific gravity phase in which tube the fluid can be separated and the lighter specific gravity phase can be dispensed therefrom comprising:

• a. an elongated rigid tubular container which has a selected internal diameter, a fluid entry open end and a closable end, the fluid entry open end having an opening diameter which is less than the selected internal diameter;
• b. a float positioned within the tubular container, the float having a float diameter which is less than the selected internal diameter of the tubular container and more than the opening diameter, the float having a specific gravity intermediate that of the lighter specific gravity phase and the heavier specific gravity phase enabling the float to be positioned between the two phases after centrifugation and act as a check valve in dispensing the lighter specific gravity phase by moving to and engaging the fluid entry open end thereby inhibiting the heavier specific gravity phase from escaping out of the tube;
• and
• c. closure means for closing the closable end to prevent the float and the fluid from flowing out of the tube, the closure means being sized and configured to be pushed through at least a portion of the tube toward the fluid entry open end by a force acting on the closure means to dispense the lighter specific gravity phase.