This SAE Standard applies to HFC-134a (R-134a) refrigerant used to service motor vehicle passenger compartment air-conditioning (A/C) systems designed or retrofitted to use HFC-134a (R-134a). Hermetically sealed, refrigerated cargo systems are not covered by this document.
SAE J2099-1999 history
2012SAE J2099-2012 Standard of Purity for Recycled R-134a (HFC-134a) and R-1234yf (HFO-1234yf) for Use in Mobile Air-Conditioning Systems
2011SAE J2099-2011 Standard of Purity for Recycled R-134a (HFC-134a) and R-1234yf (HFO-1234yf) for Use in Mobile Air-Conditioning Systems
1999SAE J2099-1999 Standard of Purity for Recycled HFC-134a (R-134a) for Use in Mobile Air-Conditioning Systems
1991SAE J2099-1991 Standard of Purity for Recycled HFC-134a for use in Mobile Air- Conditioning Systems