Parts Per Million

Parts Per Million (PPM) is a unit for parts of gas or vapour per million parts of air by volume at room temperature. For example, 1 cubic centimetre of gas in 1 million cubic centimetresof air has a concentration of 1 PPM.

Nearby pages
Partur Vidhan Sabha Constituency, Party, Party wise break-up of the 14th Lok Sabha, Partywise position in Delhi 2003 elections, Parvathipuram Vidhan Sabha Constituency