This is not to say a well trained analyst cannot have good results. It means that quantitative analysis is better performed in conjunction with Gc-Ms. Have as many scientific studies of the oils you provide with chemical data to cross reference. The information on an oil is only as good as the research is. Cross reference is the only sure method to get to the truth.
Truth is what it is.
In order to know the truth one must look at a subject in it's entirety. Is that persons interest in yours. The ones that do test most certainly aren't looking for unwanted phthalates, very few look for pesticides or herbicides. Very few farmers or distillers know what the chemical composition should look like. This is not to say that there are not farmers or distillers out there that are honest and know what they are doing.