Across International Ai -40C 1.5L Capacity Cold Trap W/ 500ml X 3 Glass Traps ETLThe Ai 2nd Gen 40C F T40 cold traps now all ETL certified. They have a much smaller footprint, but at the same time, offering you the same cooling power, 1. 5X reservoir and 1. 6X trap capacity. New upward hose barb ports provide you safer and easier vacuum tubing connection and removal. 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