A dip tube characterized by comprising an elongate hollow tubular member, an axially innermost plug member and an annular frangible bridge member bridging between the tubular member and the plug member, the tubular member extending from an innermost inlet end to an outlet end, the tubular member having an outlet opening at the outlet end and an inlet opening at the innermost inlet end, the tubular member defining a sealed continuous interior passageway through the tubular member between the outlet opening at the outlet end and the inlet opening at the innermost inlet end, the plug member extending from an axially innermost plug touchdown end to an axially outer plug outer end, the plug member having an exterior side surface extending between the plug touchdown end and the plug outer end, with the frangible bridge member intact, the frangible bridge member coupling the tubular member and the plug member with the plug touchdown end of the plug member disposed axially inwardly of the innermost inlet end on the tubular member, the frangible bridge member spanning between an interior surface of the tubular member and the exterior surface of the plug member with the frangible bridge member and the plug member sealably closing the inlet opening, the frangible bridge member selected such that while the frangible bridge member is intact, on application of a threshold compression force to the plug touchdown end of the plug member urging the plug member axially outwardly relative the tubular member and across the frangible bridge member, the frangible bridge member breaks and the plug member is displaced axially outwardly via the inlet opening into the passageway opening the inlet opening for passage of fluid axially inwardly therethrough. the tubular member extending from an innermost inlet end to an outlet end, the tubular member having an outlet opening at the outlet end and an inlet opening at the innermost inlet end, the tubular member defining a sealed continuous interior passageway through the tubular member between the outlet opening at the outlet end and the inlet opening at the innermost inlet end, the plug member extending from an axially innermost plug touchdown end to an axially outer plug outer end, the plug member having an exterior side surface extending between the plug touchdown end and the plug outer end, with the frangible bridge member intact, the frangible bridge member coupling the tubular member and the plug member with the plug touchdown end of the plug member disposed axially inwardly of the innermost inlet end on the tubular member, the frangible bridge member spanning between an interior surface of the tubular member and the exterior surface of the plug member with the frangible bridge member and the plug member sealably closing the inlet opening, the frangible bridge member selected such that while the frangible bridge member is intact, on application of a threshold compression force to the plug touchdown end of the plug member urging the plug member axially outwardly relative the tubular member and across the frangible bridge member, the frangible bridge member breaks and the plug member is displaced axially outwardly via the inlet opening into the passageway opening the inlet opening for passage of fluid axially inwardly therethrough.