conversion mg/Nm3 to PPM - Chemical environmental control - Eng-Tips
mg/Nm3 to PPM Fizzhead (Chemical) 20 Jun 04 08:02 yulinios: One thing to clarify here. ... (mg/m3)*(22.4/MW)= PPM or 1,200*(22.4/64.06) = 420 ppm It appears the difference here between my result and 25362's is that I calculate a pure vapor I ......