Formed, filled, sealed solution container, port and method for establishing flow between the container and an administration set

A formed, filled, and sealed container, access port and method for establishing fluid flow from the container to an administrative set is provided. The container is collapsible and has an inlet and an outlet. A hollow port is sealed to the container and a perforator inside the port pierces and becomes embedded in the container. Solution in the container is withdrawn into the port. A line attached to the port and an administrative set further establishes flow between the container and the administration set. The port may be operated with a single-hand to establish fluid flow from the container to the administrative set. After the perforator is embedded in the container, a lock on the port prevents the perforator from removal from the container. Activation of the lock produces an audible and/or visible notification.