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ppb

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See also: PPB

English

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Noun

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ppb (plural ppb)

  1. Initialism of parts per billion.
    • 2024 August 19, “LAKETOWN 115-kV TRANSMISSION LINE PROJECT IN CARVER COUNTY, MN”, in Great River Energy[1], page 56:
      . Therefore, Great River Energy expects ozone and NO concentrations associated with the Project to be negligible, and well below all federal standards (nitrogen dioxide (NO2) – 100 parts per billion (ppb) as one-hour average, 53 ppb as annual average; ozone 70 ppb as 8-hour average).
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