Per mille

A per milleCambridge Dictionary Online. "per mille". Cambridge University Press (Cambridge), 2014. Accessed 31 August 2012.Oxford Dictionaries: The British & World Dictionary. "per mille " Accessed 1 Aug 2014.Unicode. "General Punctuation". 2014. Accessed 5 Aug 2014. is a sign which means parts per thousand. Per mil should not be confused with parts per million (ppm).

It is written ‰, which looks like a percent sign (%) with an extra zero in the divisor.

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Category:Mathematics