Vacuum Flow Control Adapter with PTFE Stopcock, 2mm Diameter, 19/22 Joint and Straight Hose Connection for Lab Supply，Air Water Line Tube Flow Control Valve

Straight Vacuum Flow Control Adapter with PTFE Stopcock Feature | The flow control adapter features standard taper inner joint at the bottom to connect to other lab glassware with the same size outer joint.

The 2mm PTFE stopcork regulates the flow into reaction system.

Material Made of Borosilicate Glass, which has low expansion coefficient, high transparency and high chemical shock resistance, perfect for lab use.

Application Used to control the flow during chemical experiments and reactions.