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  3. PPB definition: parts per billion | Meaning, pronunciation, translations and examples

  4. PPB stands for parts per billion. One part per billion is one part of solute per one billion parts solvent . PPB is a commonly used unit of concentration for very small values.

  5. Very low solute concentrations are often expressed using appropriately small units such as parts per million (ppm) or parts per billion (ppb). Like percentage (“part per hundred”) units, ppm and ppb may be defined in terms of masses, volumes, or mixed mass-volume units.

  6. Definition. Parts per billion (ppb) is a unit of measurement used to express the concentration of a substance in a solution or mixture. It indicates how many parts of a substance are present in one billion parts of the total mixture, making it a vital metric for assessing trace amounts of gases and pollutants in the atmosphere.

  7. Parts per billion (ppb) is a unit of measurement used to express the concentration of one substance in a solution. It denotes one part of solute per billion parts of the total solution.

  8. Definition: A weight to weight ratio used to describe concentrations. Parts per billion (ppb) is the number of units of mass of a contaminant per 1000 million units of total mass.

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