Appendix A1 to Subpart F of Part 82—Generic Maximum Contaminant Levels
| Contaminant | Reporting units |
|---|---|
| Air and Other Non-condensables | 1.5% by volume @ 25 °C (N/A for refrigerants used in low-pressure appliances 1). |
| Water | 10 ppm by weight 20 ppm by weight (for refrigerants used in low-pressure appliances 1). |
| Other Impurities Including Refrigerant | 0.50% by weight. |
| High boiling residue | 0.01% by volume. |
| Particulates/solids | visually clean to pass. |
| Acidity | 1.0 ppm by weight. |
| Chlorides (chloride level for pass/fail is 3ppm) | No visible turbidity. |
| 1 Low-pressure appliances means an appliance that uses a refrigerant with a liquid phase saturation pressure below 45 psia at 104 °F. |
| Nominal composition (by weight%) | Allowable composition (by weight%) |
|---|---|
| Component constitutes 25% or more | ±2.0 |
| Component constitutes less than 25% but greater than 10% | ±1.0 |
| Component constitutes less than or equal to 10% | ±0.5 |
[69 FR 11988, Mar. 12, 2004]