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💧 Parts per million 🖨️ Pages per minute 🖼️ Image file format
ppm

ppm

14 3.7
A measure for very small amounts that shows parts in one million
  • symbol
  • Specialized
: partes por millón
  • The water tested at 400 ppm for chlorine, which indicates a high level of contamination.

They mention how much it's produced by the various countries, but it doesn't mention the concentrations, how many PPM's we have in the atmosphere.

Examples

  • Make a note of your pH and of your PPM because you'll be able to see problems as they arise much quicker.

  • They mention how much it's produced by the various countries, but it doesn't mention the concentrations, how many PPM's we have in the atmosphere.

    MIT OpenCourseWare

  • And So what that topic is, is EC, electrical conductivity, TDs, total dissolve solids, PPM, parts per million pH.

  • In environmental studies, scientists often report pollutant concentrations in ppm to indicate very small amounts of toxins in air or water.

  • We found that the fertilizer contains 200 ppm of nitrogen, which is optimal for plant growth.

Synonyms

ppmv
vsppm
  • Specialized
2 7.6

A measure that shows how much of a gas is in air per million parts

is used for very small concentrations in any medium not only gases

How Concentrated

saturated
  • Specialized
8 4.7
concentration
  • Specialized
78 4.0
ppm
  • Specialized
14 3.7
dilute
2 4.2

Surface Forms

ppm main

Etymology

The letters ppm stand for parts per million, where per means 'for each' and million is a very large number. So ppm shows very small amounts by saying how many parts there are for every one million parts, which is why scientists use it for tiny concentrations in air or water.