 Ask Remember Me? selvaa.1549 Posts: 1, Reputation: 1 New Member #1 Aug 30, 2010, 02:49 PM
What is ppm?how I do ppm calculate?
What is ppm?how I do ppm calculate? Stratmando Posts: 11,188, Reputation: 508 Uber Member #2 Aug 30, 2010, 03:33 PM

Ppm is parts per million, 1 ppm equals 1 millionth of 100%
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