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It refers to a concentration ratio.

x parts per million means than in every million units of measure of the total, x units are of the substance of interest and (1 million - x) of other substances.

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Q: What does The term parts per million refers to?
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Related questions

What is ppm in diesel?

PPM means 'parts per million' and usually refers to contamination.


How much is 10 parts per million?

If you have 1 million parts of something 10 parts would be 10 parts per million. If you had 2 million parts of something 20 parts would be 10 parts per million.


What is the abbreviation for parts per million?

parts per million = ppm


How do you convert parts per thousand into parts per million?

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How many PPM is 4.8 milligrams per liter?

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What parts per billion or parts per million is nickel?

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Is ppm used to express concentration?

Parts per Million and Parts per Billion. Parts of a solute per Million parts of the Solvent.


When was More Parts per Million created?

More Parts per Million was created in 2004.


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How do you convert parts per million to a percentage?

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What are the names of the gases in racing car tires?

Air is contained in Tires Air contains. Nitrogen N2 78.084% 99.998% Oxygen O2 20.947% Argon Ar 0.934% Carbon Dioxide CO2 0.033% Neon Ne 18.2 parts per million Helium He 5.2 parts per million Krypton Kr 1.1 parts per million Sulfur dioxide SO2 1.0 parts per million Methane CH4 2.0 parts per million Hydrogen H2 0.5 parts per million Nitrous Oxide N2O 0.5 parts per million Xenon Xe 0.09 parts per million Ozone O3 0.07 parts per million Nitrogen dioxide NO2 0.02 parts per million Iodine I2 0.01 parts per million Carbon monoxide CO trace Ammonia NH3 trace