Question

what is a cold trap?

Answer 1

In vacuum applications, a cold trap is a device that condenses all vapors except the permanent gases into a liquid or solid. The most common objective is to prevent vapors being evacuated from an experiment from entering a vacuum pump where they would condense and contaminate it.

Answer 2

In vacuum applications, a cold trap is a device that condenses all vapors except the permanent gases into a liquid or solid.