Glass Thermometer Adapter 14/20

A glass thermometer adaptor 14/20 is a laboratory accessory designed to connect a thermometer to a piece of glassware, such as a reaction vessel or distillation apparatus. The "24/40" part refers to the size of the glass joints: it has a 24mm outer diameter and 40mm length for the joint, which is a standard size in laboratory glassware.

Here's a bit more detail on the parts:

1. Glass construction: It is made of durable, heat-resistant Pyrex glass, which allows it to withstand high temperatures without cracking or breaking.

2. Joint sizes: The 14/20 is a common size for laboratory equipment. The adaptor has a male or female 24/40 joint that fits into other pieces of equipment that have matching 14/20 joints.

3. Function: It allows for a thermometer to be securely inserted into a reaction flask or similar equipment, ensuring that the thermometer stays in place while measuring temperature. This is important in experiments requiring precise temperature control.

4. Shape and design: These adaptors have a small opening that holds the thermometer snugly, ensuring the thermometer's reading is accurate without exposing it to the environment or chemicals in the vessel.

It’s a useful tool for anyone working with temperature-sensitive processes in a lab, such as distillation, titration, or reactions that require monitoring temperature closely.