Cylindrical vessel with a 2mm bore PTFE stopcock, GL thread at top, Ace-Thred at bottom that accepts a PTFE adapter with removable Por. C glass filter disc and a PTFE shut-off valve. PTFE adapter has a front type seal using a CAPFE O-Ring to make a compression seal in the Ace-Thred on Vessel. Other end of adapter has a 1/4" FNPT thread that allows connection of a 2.5mm bore PTFE shut-off valve with a luer extension. Supplied with a solid cap GL thread. Complete item consists of Vessel, PTFE Adapter, CAPFE O-Ring, and Valve.