What is PPM?
Parts per million (PPM) represents the mass ratio of solute to solution multiplied by 10⁶:
PPM = (mass of solute / mass of solution) × 10⁶
1 PPM = 1 mg/L (for dilute aqueous solutions)
Calculate Solution Concentrations in PPM
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Calculate PPM from mass of solute and solution.
Calculate mass of solute needed for desired PPM.
Convert between concentration units and PPM.
Parts per million (PPM) represents the mass ratio of solute to solution multiplied by 10⁶:
PPM = (mass of solute / mass of solution) × 10⁶
1 PPM = 1 mg/L (for dilute aqueous solutions)
PPM is used for:
Common conversion factors:
Typical PPM values: