Answer :
Final answer:
The purity specification of new, recycled, or reclaimed R-134a must meet the ASTM standard, as established by the American Society for Testing and Materials.
Explanation:
The purity specification of new, recycled, or reclaimed R-134a must meet the ASTM standard. The American Society for Testing and Materials (ASTM) sets the specifications, including purity levels, for various materials and chemicals to ensure they meet the required performance characteristics for their intended use. This is particularly important for refrigerants like R-134a, which are used in HVAC systems and automotive air conditioning, to ensure efficiency and environmental safety.