Separatory Funnels 1.Hand-crafted; 2.Material:Borosilicate 3.3 glass; 3.Certificate:ISO9001-2000; 4.Welcome OEM & orders. Separatory Funnels1.Material:Borosilicate glass 3.3 or quartz glass or according to requirements.2.Description:Pear shaped separatory funnels have PTFE stopcocks.The plug also reduces freezing problems and grease contamination. And it has a 2mm glass stopcock. Outer joint at ...