R-12: Before its production phaseout in 1995, it was used in a variety of applications from small hermetic refrigeration systems up through large, positive pressure chillers. It was long-time industry standard for automotive air conditioning, kitchen appliances, high/medium/low temperature refrigeration, and many other commercial and industrial applications. Limited quantities of reclaimed R-12 is still available for service of installed equipment.
An EPA certification card is required to purchase CFC and HCFC refrigerants.