How to abbreviate Parts Per Million?

The ways to abbreviate Parts Per Million.

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PPM:
Parts Per Million(Unit, Urban design, Urban planning)
For more, try PARTS PER MILLION on ALL ACRONYMS DICTIONARY
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APASmart Define. (2017). parts per million. Retrieved October 1, 2026, from http://smartdefine.org/parts_per_million/abbreviations/a/aviation
ChicagoSmart Define. 2017. "parts per million" http://smartdefine.org/parts_per_million/abbreviations/a/aviation (accessed October 1, 2026).
HarvardSmart Define 2017, parts per million, Smart Define, viewed 1 October, 2026, <http://smartdefine.org/parts_per_million/abbreviations/a/aviation>.
MLASmart Define. "parts per million" 24 September 2017. Web. 1 October 2026. <http://smartdefine.org/parts_per_million/abbreviations/a/aviation>