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Convert-Me.Com - online units conversion • View topic - mg/kg to ppm

how do you convert mass/mass to volume/volume? does 1 mg/kg = 1 ppm NOT ALWAYS!!!! If you have 100 boxes of equal volume then 1 box = 1pph (part per hundred) If the overall mass of those hundred boxes is 100kg then 1 box or 1pph will have a mass of 1kg...

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