In vacuum applications, a cold trap is a device that condenses all vapors except the permanent gases into a liquid or solid. Harvest Pro® Terp Traps can significantly reduce the wear and tear on vacuum pumps. They will trap and collect plant terpenes that are lost during the vacuum process. Harvest Pro® Terp Traps are currently available in a , 20° C to ,40° or ,80° C ,4° to ,40° or ,112° F models and are equipped with stainless steel cooling coils and coolant drain outlet. Liquid coolant sold separately.