PPB Definition in Chemistry (Parts Per Billion)

What Does PPB Mean in Chemistry?

PPB or parts per billion is used to describe concentration in extremely dilute solutions.
PPB or parts per billion is used to describe concentration in extremely dilute solutions. Glow Images, Inc / Getty Images

PPB Definition: PPB stands for parts per billion. PPB is a commonly used unit of concentration for very small values.

One part per billion is one part of solute per one billion parts solvent.