The composition of an essential oil can be determined through various testing processes including Gas Chromatography/Mass Spectrometry (GC/MS), Fourier Transform Infrared Spectroscopy (FTIR), Chirality testing, etc. AromaticScience science does not provide specific test results for any essential oils due to the high level of expertise needed to interpret this data and fluctuations in essential oil chemistry that occur naturally due to geographic and environmental considerations. To see a list of the most common constituents in essential oils please visit educational Module 4: Essential Oil Chemistry, accessible here.