To some extent. There are limitations on the technique, including, but not limited to, not determining the relative concentrations and not detecting all compone

To some extent. There are limitations on the technique, including, but not limited to, not determining the relative concentrations and not detecting all components. The WSJ article actually links to an older Wired article about doing gas chromatography and mass spectroscopy on WD-40 and the results: https://www.wired.com/2009/04/st-whatsinside-6/ https://www.wired.com/2009/04/st-whatsinside-6/