Conversion PPM(wt), PPM(vol), g/m3 (gas phase) - Chemical environmental control - Eng-Tips
trond,Check the following site, www.processassociates.com it has a rather extensive concentration conversion calculator. just as an aside this is the conversion base: 1ppm=1 mg/l=1 mg/kg 1ppb=1 micro g/l =1 micro g/kg 1ppm=1000ppb 1mg/l=1g/m^3 Hope this ....