ACDelco 10-9097 R134A Air Conditioning Refrigerant - 350 mL The non-ozone depleting gas is more environmentally friendly than R-12 refrigerants High-quality formula to help keep your air conditioning system running smoothly Meets SAE J2776 purity standard meaning that the refrigerant contains limited number of unsaturated impurities or that there is a lower likelihood of the product containing contaminants that can contribute to the formation of sludge or tar in the cooling system