Parts per million (ppm) is a common way to express small

Last updated: 7/31/2022

Parts per million (ppm) is a common way to express small concentrations of a solute in water. A sample of tap water that is 25 ppm Cl contains 25 grams of CI for every 1,000,000 grams of water. Which units are numerically equal to ppm for dilute aqueous solutions? g/L mg/L. cg/L. µg/L ng/L