These versatile glass separatory funnels have a lower inner (male) joint and a top outer (female) joint. These funnels not only serve as traditional extraction separatory funnels, but they can also be used as addition funnels that sit on top of any standard taper joint reaction flasks.
All funnels come with a 2 mm PTFE stopcock, except for the 250 mL separatory funnels, which have a 4 mm stopcock. You have a choice between a glass stopper and a PTFE stopper. The PTFE variant helps to minimize problems related to freezing and grease contamination.
Made of borosilicate glass for its excellent chemical durability and mechanical strength.
