Conversions: Concentration

The conversion equation is based on 25 ºC and 1 atmosphere:

  • X ppm = (Y mg/m3)(24.45) / (Molecular Weight)
  • Y mg/m3 = (X ppm)(Molecular Weight) / 24.45

Conversions: Concentration

The conversion equation is based on 25 ºC and 1 atmosphere:

X ppm = (Y mg/m3)(24.45) / (Molecular Weight)

or

Y mg/m3 = (X ppm)(Molecular Weight) / 24.45