Across International T1 Glass Vacuum Cold Trap for Safe Vacuum OperationsIn 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. Particularly large cold traps are necessary when removing large amounts of liquid as in freeze drying. Pumps that use oil either as their working fluid (diffusion pumps), or