40 CFR Appendix A1 to Subpart F of Part 82: 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