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PPM or ppm stands for parts per million. It is scientific term that refers to the relation ship between one chemical and another. It describes the concentration of a solution to the
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Parts per million, equivalent to milligrams per Liter.
http://wiki.answers.com/Q/What_does_ppm_stand_for_...
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it means parts per million.:) ur welcome!
http://wiki.answers.com/Q/What_is_the_meaning_of_p...
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Parts per million. (. ppm.) is a measure of concentration that is used where low levels of concentration are significant. The ppm value is equivalent to the absolute fractional amount
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