KS I ISO 17734-1-2019 Determination of organonitrogen compounds in air using liquid chromatography and mass spectrometry — Part 1: Isocyanates using dibutylamine derivatives
2019KS I ISO 17734-1:2019 Determination of organonitrogen compounds in air using liquid chromatography and mass spectrometry — Part 1: Isocyanates using dibutylamine derivatives
2014KS I ISO 17734-1:2014 Determination of organonitrogen compounds in air using liquid chromatography and mass spectrometry — Part 1: Isocyanates using dibutylamine derivatives
2007KS I ISO 17734-1:2007 Determination of organonitrogen compounds in air using liquid chromatography and mass spectrometry-Part 1:Isocyanates using dibutylamine derivatives