40 CFR Appendix A1 to Subpart F of Part 82 - Generic Maximum Contaminant Levels

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.

Blend Compositions (Where Applicable)

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]