Question

What does ppm mean with respect to concentration?

Answer 1

Just as per cent means out of a hundred, so parts per million or ppm means out of a million. Usually describes the concentration of something in water or soil. One 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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Answer 2

Answer:

▶Parts per Million ( ppm ) is a measurement of the concentration of a solution.

For very dilute solutions , weight /weight (w/w) and weight /volume (w/v) concentrations are sometimes expressed in parts per million Parts per million is abbreviated as ppm. ✔

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