Definition of Parts Per Billion (ppb)/Parts Per Million (ppm)

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TeachMeFinance.com - explain Parts Per Billion (ppb)/Parts Per Million (ppm)



Parts Per Billion (ppb)/Parts Per Million (ppm) -- Units commonly used to express contamination ratios, as in establishing the maximum permissible amount of a contaminant in water, land, or air.




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Mark McCracken

Author: Mark McCracken is a corporate trainer and author living in Higashi Osaka, Japan. He is the author of thousands of online articles as well as the Business English textbook, "25 Business Skills in English".


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