Abstract: The present invention comprises a biological specimen container assembly for the safe storage and periodic examination of biological specimens therein, which includes an elongated vial having a primary chamber with a first open end and a second closed end. The second closed end on the vial has a secondary chamber therein of generally rectilinear shape in cross-section. A valve having a first end and a second end, has its second end matable with the first open end of the vial, the valve having an adjustably openable and closable bore extending longitudinally therethrough. A hard cap has a cavity therein which is matable over the first end of the valve. An end cap is matable over the hard cap and the valve, the end cap being arranged to maintain sterility of the end cap, the valve and the first end of the vial.