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| Definition | : | parts per million |
| Category | : | Academic & Science » Units |
| Country/ Region |
: | Worldwide
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Initialism
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Parts per million (ppm) is a way of expressing very dilute concentrations of substances. One PPM means one in a million or 1/1,000,000. It usually describes the concentration of something in water or soil. 1 ppm is equivalent to 1 milligram of something per liter of water (mg/L) or 1 milligram of something per kilogram soil (mg/kg).
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The full form of ppm is parts per million
parts per million | Pages Per Minute
parts per million | Pages Per Minute | Perl Package Manager | Portable People Meter | Permanent Pacemaker