C48523Level 6
Part Per Million
**Semantic type:** Quantitative Concept
**Definition:** A unit of proportion equal to 10E-6.
**Synonyms:** - PART PER MILLION - PPM - Part per Million - Per Million - [ppm] - [ppm] - [ppm] - [ppm] - [ppm] - [ppm] - part per million - part per million - parts per million - parts per million - parts per million - ppm - ppm
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