What Does PP Stand For?

PP stands for Parts Per

"PP" stands for "Parts Per," a measurement unit used to describe the concentration of a substance in a solution or mixture. It expresses the ratio of a specific component to the total amount, typically in terms of mass or volume, and is often used in scientific contexts such as chemistry, environmental science, and quality control. Common expressions of "PP" include parts per million (ppm) and parts per billion (ppb), which help quantify trace amounts of substances in larger quantities.

Other Meanings for PP