Distilling head for magnetically controlling reflux ratio. The proper electromagnetic coil to use to actuate the magnet is LG-6212.
Stopcock in receiver tube permits change of receivers without interrupting the distillation. Additional stopcocks allow operation at atmospheric or reduced pressure. The top of vapor tube has a 10/30 outer joint to accept a thermometer calibrated for 75mm immersion. Receiver connection is a full length 24/40 inner joint, while bottom of uptake tube is available in two different inner joints.