Nalgene™ polypropylene separatory funnel with PTFE TFE stopcock and housing; leakproof polypropylene screw closure. Phase interface visible down to stopcock. TFE stopcock and housing eliminate need for lubrication, possibility of contamination. Resist virtually all chemicals, including hydrofluoric acid. 65mm stem length. Autoclavable except for stopcock assembly, which is easily removed. Stopcock assembly may be chemically disinfected.