The do-TERRA® commitment to quality goes beyond proper sourcing of essential oils. It also takes into account modern
practices of testing to ensure purity, potency, and consistency. Using cutting-edge technologies and world-renowned
chemists who specialize in the analysis and identification of aromatic compounds, do-TERRA tests each batch of
essential oil to make sure that you are receiving the purest and highest therapeutic quality oil every time.
The battery of tests that do-TERRA uses is a part of the CPTG Certified Pure Therapeutic Grade® quality protocol. When
an oil is deemed worthy of the CPTG status, you can know with surety that it is pure, potent, and effective.
do-TERRA partners with chemists, biological and microbiological scientists, botanists, and medical professionals to
create a comprehensive understanding necessary for proper sourcing, analysis, and use of essential oils.
*Gas Chromatography and Mass Spectrometry Analysis (GC/MS)
The tests included in the CPTG
protocol include:
• Organoleptic testing
• Mass spectrometry*
• Gas Chromatography*
• Microbial testing
• Fourier Transform Infrared Spectroscopy (FTIR)
• Chirality testing
• Isotopic analysis
• Heavy metal testing (as needed)
Sample
GCMS
Detector
Chromatographic
Column
Gas
Cylinder
GCMS