parts per million
noun[plural]
MEASURESukus→ppm
Examplesofparts per million
parts per million
One micromolar is approximately 0.115partspermillion.
From
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This example is from Wikipedia and may be reused under a CC BY-SA license.Wheat and corn contain seven and threepartspermillionrespectively.
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This example is from Wikipedia and may be reused under a CC BY-SA license.In rats subjected to a two-year feeding study, no observable effect was seen at 100partspermillion(ppm).
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This example is from Wikipedia and may be reused under a CC BY-SA license.Ozone concentrations are greatest between about 20and40 km, where they range from about 2 to 8partspermillion.
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This example is from Wikipedia and may be reused under a CC BY-SA license.The huge quantities of nickel ore processed makes up for the fact that platinum makes up only twopartspermillionof the ore.
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This example is from Wikipedia and may be reused under a CC BY-SA license.The acceptable level has been raised to tenpartspermillionfor ephedrine and twenty-fivepartspermillionfor other substances.
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This example is from Wikipedia and may be reused under a CC BY-SA license.Near its mouth, the concentration is 28partspermillion.
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This example is from Wikipedia and may be reused under a CC BY-SA license.Water chemists measure water impurities inpartspermillion(ppm).
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This example is from Wikipedia and may be reused under a CC BY-SA license.The report said that carbon dioxide levels in the soil averaged about 23,000partspermillion, several times higher than is normal for the area.
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This example is from Wikipedia and may be reused under a CC BY-SA license.In areas affected by acid mine drainage, the sulfate concentration ranges from 37 to 1375partspermillion.
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This example is from Wikipedia and may be reused under a CC BY-SA license.These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors.