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PPM or Parts Per Million is a unit used to describe very small concentrations of a substance in a larger solution. PPM means 1 per every 1,000,000 or 1/1,000,000. What is PPM in Science?
Parts per million (ppm) is a commonly used unit of concentration for small values. One part per million is one part of solute per one million parts solvent or 10 -6. Parts per million and other "parts per" notations (e.g., parts per billion or parts per trillion) are dimensionless quantities with no units.
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what is ppm stand for
