Search Here


PPM stands for “Parts Per Million.” PPM is a unit of measurement that is used to express the concentration of a chemical or substance in a solution. It is often used to measure the concentration of a trace element or impurity in a larger sample, or to express the purity of a substance. To express a concentration in ppm, the weight or volume of the chemical or substance is divided by the weight or volume of the solution, and the result is multiplied by 1,000,000. For example, if a solution contains 1 gram of a chemical in a total volume of 1,000,000 milliliters (1 liter), the concentration of the chemical in the solution would be expressed as 1 ppm (1 gram / 1,000,000 milliliters * 1,000,000 = 1 ppm). The abbreviation “ppm” is often used to indicate the level of concentration in a solution.

Leave a Comment