Glassware Thermometer Adapter

A Thermometer Adapter is used to create a vacuum-tight, adjustable seal around a thermometer when you need to insert it into a distillation head or a flask.

For metal thermometer probes that will be submerged into ab aggressive acid we recommend using a Pocket Thermometer Adapter. Even "acid-resistant" stainless steel probes will eventually pit or degrade when submerged in hot, aggressive acids

• Slide the plastic cap onto the thermometer.
• Slide the rubber ring onto the thermometer after the cap.

• Push the thermometer through the top of the glass adapter body.
• Slide the thermometer up or down until the bulb is positioned exactly where you need it (usually just below the side-arm of a distillation head to measure the vapor temperature accurately). 

• Screw the plastic cap onto the threaded top of the glass adapter.
• As you tighten the cap, it compresses the rubber ring against the thermometer, creating a leak-proof and vacuum-tight seal. 

• Insert the ground glass joint of the adapter into your labware (like a Still Head).
• Pro Tip: Apply a very thin layer of vacuum grease to the ground joint to ensure it doesn't "freeze" or leak under vacuum. 

• Don't Over-tighten: Tighten the cap just enough to stop the thermometer from sliding. Over-tightening can snap the thermometer or crack the glass threads.
• Lubrication: If the thermometer is hard to slide through the rubber ring, use a drop of glycerin or water as a lubricant to avoid breaking the thin glass stem.
• Check the Joint Size: Ensure your adapter’s joint (e.g., 14/23) matches the socket on your glassware. 

Specifications

• Material: Clear 3.3 Borosilicate Glass 
• Joint Size: Select from drop down
• "O"-ring: GL14 open top compression cap and "o"-ring included
• Brand: OMSONS
• Product of India