What is the same as 4 pints?

What is the same as 4 pints? Four pints is equal to two quarts. Which is more 4 pints or 2 quarts? What does 4 pints equal? Four pints is the same as 2 qu...

Why do we use ppm?

Why do we use ppm? ppm (or ppmm) is used to measure the concentration of a contaminant in soils and sediments. In that case 1 ppm equals 1 mg of substance...