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.