Chemglass, CG-1744-42, Funnel Sep Squibb 4000mL 10mm PTFE Stpk 45/50 Outer with Detachable GL-18 TFE Drip Tip Glass Stopper
This unique separatory funnel is manufactured with a removable PTFE stem that virtually eliminates breakage normally associated with standard glass stem stopcocks.
Made entirely of PTFE, the stem attaches directly to the glass stopcock without o-rings or other gaskets.
Glassware equipped with this PTFE stem can survive repeated forceful strikes to the stem without breakage.
Supplied complete with a glass stopper of the listed size.