Adapters permit the connection of standard laboratory dram sample vials directly to the vapor tube or a bump trap of a rotary evaporator.

• Adapters feature a top outer joint

Adapters have a top outer joint of the listed size and a 20 to 400 G.P.I. thread at the bottom. A PTFE-lined, polypropylene, double-threaded connector attaches the vial to the adapter.