Questions and answers on how to convert things from one unit or system to another
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Tue Nov 01, 2011 6:43 pm
wanna convert 40 ppm to mg/l
Thu May 03, 2012 11:06 am
Many resources you find show mg/L the same as ppm, but its not exactly true.
Pure water at standard temperature and pressure has a density of 1 kg/L, therefore:
mg/L = mg/kg = ppm
But that is only true when using pure water at standard temperature and pressure. Any other substance will have a different density and will not be a direct conversion between mg/L and ppm.
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