Distillation head which uses Vigreux indentation for increased surface area within the vapor path.

Distillation head which uses vigreux indentation for increased surface area within the vapor path

Distillation head which uses Vigreux indentation for increased surface area within the vapor path, but vacuum jacketed.

Head with a condenser sealed to a Vigreux column. Vigreux column has a 10/18 thermometer joint.

Head with a condenser sealed to a Vigreux column. Vigreux column has a 10/18 thermometer joint, but with a vacuum jacket.

Jacketed head, with a sealed condenser which is braced for added strength. Top joint is used with a 25 mm immersion thermometer.

Jacketed apparatus used for distillation under vacuum. 10/18 joint and 10/30 joint to be used with a 25 mm, and 50 mm partial immersion thermometer, respectively.