What does ppm show ? Explain in detail.
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Parts per million - ppm - is commonly used as a dimensionless measure of small levels (concentrations) of pollutants in air, water, body fluids, etc.
Parts per million is the molar mass, volume or mass ratio between the pollutant component and the solution. ppm is defined as
ppm = 1,000,000 c / s
= 106 c / s (1)
where
c = molar mass, volume or mass of component (mole, m^3, ft^3, kg, lbm)
s = molar mass, volume or mass of solution (mole, m^3, ft^3, kg, lbm)
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