Distilling Head, With Vigreux-style Tube and Claisen-Style, Standard Ground Joints

• Design: A vertical tube containing multiple rows of downward-pointing glass "thorns" or spikes, typically with a 75° side-arm for condenser connection.
• Material: High-grade Borosilicate Glass 3.3, essential for resisting the high thermal gradients of fractional distillation.
• Joints: Usually features three precision-ground joints:
  • Bottom (Cone): Connects to the boiling flask.
  • Side-arm (Cone): Connects to the condenser.
  • Top (Socket): For a thermometer adapter to monitor head temperature.
• Effective Length: Common "thorned" sections range from 100 mm to 300 mm depending on the required separation efficiency.

• Fractional Distillation: Used to separate liquids with close boiling points. The thorns provide a "cold" surface for less volatile vapors to condense and drip back (reflux) while allowing more volatile vapors to pass through.
• High-Purity Solvent Recovery: Ensures that only the purest vapor reaches the condenser, leaving impurities in the boiling flask.
• Space-Saving Setup: Combines the fractionating column and the distilling head into a single compact unit.

• Insulation: For maximum efficiency, wrap the "thorned" vertical section in aluminum foil or a heating jacket to maintain a steady temperature gradient.
• Vertical Alignment: Ensure the tube is perfectly vertical so the condensed liquid (reflux) can flow evenly over the thorns back into the flask.
• Thermometer Placement: Ensure the thermometer bulb is positioned exactly at the junction of the side-arm to measure the vapor temperature accurately just before it enters the condenser.

Specifications:

• Material: 3.3 Borosilicate glass
• Neck: Ground glass joint (socket)
• Joint Sizes: 19/26, 24/29, 29/32 (Select an option)
• Brand: NONE
• Product of China