Bottle caps and plugs, manufactured from Tefzel® ETFE and polypropylene, are easy to use, but still allow many connection options.

These bottle caps fits standard thread GL 45 (1 L) and neck GL 38 (4 L) glass bottles. Each cap has three holes. Two of the holes allow tubing to be pushed straight through into the bottle. The third hole, with a Luer taper, can be used for a number of options.