Adapter, Distilling Head Claisen, Standard Ground Mouth

This Claisen distilling head adapter has standard ground glass joints and is used in distillation and reaction setups. A Claisen adapter is a Y-shaped glass connector that adds an extra vertical neck, which is essential for reactions where you need to monitor the temperature while adding reagents or using a mechanical stirrer.

Key Features

• Design: Two parallel vertical necks and one angled side arm (usually at 75°).
• Joints: Four ground glass joints:
  • Bottom (cone): Connects to the boiling flask.
  • Straight vertical (socket): For a dropping funnel, stirrer or addition tube.
  • Second vertical (socket): For a thermometer adapter.
  • Angled side arm (cone): Connects to the condenser.
• Material: Quality borosilicate glass 3.3 for thermal shock and chemical resistance.

Core Applications

• Controlling vigorous boiling: The extra neck acts as a buffer that stops liquid splashing straight into the condenser.
• Vacuum distillation: Ideal where a capillary tube has to go into the boiling flask to prevent bumping under reduced pressure.
• Access while running: You can add liquid through a dropping funnel without stopping the distillation or removing the thermometer.

Tips for Use

• Vapour path: Put the thermometer in the neck nearest the angled side arm for the most accurate reading of the vapour entering the condenser.
• Support: Claisen adapters are top-heavy, so support the boiling flask and condenser separately with retort stands and clamps.
• Sealing: Apply a light coat of vacuum grease to all joints for an airtight seal, especially under vacuum.

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