Which standard must be met for reused refrigerants of the same owner?

The standard that must be met for reused refrigerants of the same owner is AHRI 700. This standard specifies the minimum purity levels for refrigerants intended for use in air conditioning and refrigeration systems. It outlines the criteria that reclaimed refrigerants must meet to ensure that they are safe and effective for use, including specific limits for contaminants such as moisture, acidity, and non-condensables.

Meeting AHRI 700 is crucial for ensuring the reliability and efficiency of the refrigeration system, as contaminants can lead to equipment failure and reduced performance. Additionally, using refrigerants that comply with this standard helps in maintaining environmental safety and compliance with regulations regarding refrigerant use.

In contrast, the other standards listed do not apply specifically to reclaimed refrigerants for reuse by the same owner. ARI 600, for instance, pertains to testing methodologies for different types of refrigeration equipment, while EPA 300 and ANSI 800 cover various environmental regulations and general safety standards, respectively, but are not focused on the purity requirements for reused refrigerants. Therefore, AHRI 700 is the relevant standard for ensuring the quality of reused refrigerants.