Encyclopedia > Part per million

  Article Content

Parts per million

Redirected from Part per million

Parts per million (ppm) is a measure of concentration that is used where low levels of concentration are significant. The ppm value is equivalent to the absolute fractional amount multiplied by one million (106).

Illustrations of one part per million:

Examples of situations where parts per million are an appropriate measure include:

Similar, even smaller measures:



All Wikipedia text is available under the terms of the GNU Free Documentation License

 
  Search Encyclopedia

Search over one million articles, find something about almost anything!
 
 
  
  Featured Article
Frank Gehry

... Frederick Weisman Museum of Art[?], University of Minnesota, Minneapolis, Minnesota Experience Music Project, Seattle, Washington Guggenheim Museum Bilbao, ...