Adapter allows vessels to be flushed with inert gas while sampling directly thru the bore of the T-Bore stopcock. Available with a choice of a 4mm high vacuum glass stopcock having a S.S. constant pressure retention device or a 4mm PTFE stopcock. Both the glass and PTFE stopcock have 9mm OD medium wall arms for use with CG-3022-05 red or CG-3022-22 white septum stopper. PLEASE NOTE: NOT SUPPLIED WITH SEPTUM STOPPER