Today was the first time I used a Snyder Column. The Synder Column is such a neat little condenser. It's different from other condensers because it doesn't require a cold water jacket and a constant source of chilled water. When your reaction solvent or compound begins to evaporate, the vapors will move up the column, but because the column's flow pathway is blocked by a series of glass bulb in successive chambers, it take some pressure before the vapors is strong enough to push the bulb up and move into the next chamber. When you do this enough times, you have a good way of making sure your solvent stays tight as you leave your reaction cooking overnight. Assuming it is beneath about 80 °C.