The Three-Way Adapter
If there is any one place your setup will fall apart, here it is When you set up the jointware, it is important that you have all the joints line up. This is tricky, since, as you push one joint together, another pops right out. If you're not sure, call your instructor to inspect your work. Remember, all joints must be tight!
Grease all ground glassware joints as you assemble the apparatus.