"RS" series of Drop-in zero ODP refrigerantsAll of the "RS" series of refrigerants are non ozone depleting with a safety classification of A1 and can be used both with traditional lubricants (e.g. mineral and alkyl benzene oils) and the new synthetic lubricants such as polyolnesters. They provide a simple & low cost method of switching away from CFCs & HCFCs including the interim ozone depleting blends. Brief summary of these novel refrigerants: