An apparatus for reclaiming contaminated refrigerant is disclosed. This apparatus contains three heat exchangers, the first of which cools the refrigerant to a temperature of less than about 32 degrees Fahrenheit, the second of which cools the refrigerant to a temperature of less than about -40 degrees...http://www.google.com/patents/US5189889?utm_source=gb-gplus-sharePatent US5189889 - Refrigerant reclaiming device
