Recycled r134a refrigerant cannot exceed what levels of contaminants

Answer is:
1) lubricant - 500 ppm by weight.
2) moisture - 50 ppm by weight.
3) non-condensable gases (air) - 150 ppm by weight.
Standard J2099 specific the maximum levels of contaminants for R134a.
ppm (parts-per-million, 10⁻⁶) is value that represents the part of a whole number in units of 1/1000000.

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