3rd Party Testing Like this post? Share by using the buttons below...FacebookPin It 3rd Party Testing We have raised funds three times now in order to GC/MS test essential oils from several different companies via 3rd party testing. Why We Perform 3rd Party GC/MS Testing Round 1 Results: Myrrh Preparing for Round 2: Tea Tree Round 2 Results: Tea Tree Preparing for Round 3: Peppermint 3rd Party Test Results – Master List 3rd Party Test Results for Peppermint Donors List