Adam at EVS has been awesome to work with. He's super knowledgeable and great at his work. He's passionate about testing essential oils and making sure that the products that make it to market are not adulterated. He's great at trace marker identification through GC/MS profiles and has expertise in spotting adulteration of all types. We've had hundreds of oils tested by Adam and can't complain at all. He's been a great help with our vetting of suppliers, especially when we're on a time crunch!