These 250 mL PYREX® pear-shaped glass separatory funnels have PTFE (Polytetrafluorethylene) No. 4 Product Standard stopcocks and No. 22 Standard Taper polyethylene stoppers. The stopper is made with a closed bottom and is of linear high density polyethylene to conform to Standard Taper stopper dimensions. The PTFE plug fits into the micro-finish barrel. The plug also reduces freezing problems and grease contamination. For replacement polyethylene Standard Taper stoppers, see No. 7624; for PTFE stopcock assemblies, see No. 7681.
Product Family Description:
The stopper is made with a closed bottom and is of linear high density polyethylene to conform to stopper dimensions.
For stopper only, see Cat. No. 7624.