Refrigerant analysis is usually performed for two separate reasons: refrigerant recycling or system maintenance.
The EPA requires recycled refrigerants to be tested according to the ARI 700 standard for Refrigerant Purity before they can be sold on the market. These samples are tested for a wide range of properties, including contamination from other refrigerants.
Refrigerant samples are pulled from working equipment in the field to perform maintenance on the system. These samples need a less extensive test than the ARI 700, and the acceptable limits given on the report are geared towards identification of maintenance problems, rather than the purity of the refrigerant.
When choosing your refrigerant analysis, keep in mind the end use of the analysis results.
Do you need an analysis of the purity of your sample for the reuse of recycled refrigerant? Choose ARI 700 analysis.
Do you need an analysis of the refrigerant to diagnose a problem with equipment in the field? Choose Refrigerant Analysis for Chiller Maintenance.