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Re: Converting mg/L to ppm?
---------- Forwarded message ----------
>From: tmarch at primenet_com (Todd March)
>Date: Fri, 19 Jul 1996 18:58:38 -0700
>
>Can anyone give me the formulas and explanations for converting mg/litre to
>ppm (parts per million)? A few friends have test results in ppm, and we
>would like to exchange information.
OK, it's complicated but here goes:
Assume that the solution you are concerned with is mostly water since "parts
per million" concentrations are pretty small.
Also, remember that pure water at standard temperature and pressure weighs
one gram per cubic centimeter.
1 mg 0.001 g 1000 * 0.001g 1 g
------ = ------- = ----------------- = ---------------
1 litre 1000 cu cm 1000 * 1000 cu cm 1 million cu cm
1 g 1 cu cm 1 part
--------------- X --------- = ------------- = 1 ppm
1 million cu cm 1 gram million parts
:-)
George