Vacuum jacketed Vigreux distillation head having a sealed on condenser, braced for strength. The top outer joints is for a 1” (10/18) or 3” (10/30) immersion thermometer. Vacuum adapter has an inner joint and a sealed in drip tip. Condenser length is 100 mm for the 14/20 and 19/22 size and 200 mm for the 24/20 size.