ppm

Noun

1. Initialism of parts per million (10000 ppm = 1%).
   • The overflush consisted of 100 bbls of uncrosslinked 3000 ppm polymer, followed by one wellbore volume (~150 bbls) plus 450 bbls crude behind pipe. - 1995, Proceedings, International Meeting on Petroleum Engineering,...
   • PIRG noted the European Union has a limit of 300 ppm for boron and that there should be a “full-fledged investigation to determine if limits should be established” in the US. - 2018 November 20, Wayne Drash, “Consumer...

   Synonyms: μU microuno

   Coordinate Terms: ppb ppt ppq

2. Initialism of page(s) per minute.

   Coordinate Terms: wpm cps