I looked, as I said I would and could not find anything concrete, certified from any independent source, however I did look at the rest of their site and they have an awful lot of certifications and information about a lot of their products. I have a hard time believing, with that much information on other products that they would lie about just this one. I would have no issues buying from them and trusting what they said and using their products. But of course, that is up to your own personal decision on the matter. Seems like a case of picking your battles on this one and I just don't see one there.