Corning Pyrex Borosilicate Glass 1L Separatory Funnel with PTFE Valve & Screw Cap - Lab Grade Chemical Separation Equipment for Essential Oil Extraction, Chemistry Experiments & Scientific Research

These 1L improved PYREX Squibb type glass separatory funnels provide an unbreakable Polytetrafluorethylene (PTFE) valve and drip tip and have a screw thread closure at the top. They are supplied complete with a No. 4 PTFE valve assembly and a GL 45mm screw cap with PTFE faced silicone liner. For replacement valve bottoms, see 6305-4VO; for replacement caps, see No. 1395-45HTC.