Yes, there are some studies out of Virginia Commonwealth University, as well as recent studies at Buffalo, where they have been looking at the heavy metals that are coming out of these products.
Having said that, this is rapidly changing technology. In fact, very quickly after I brought up the concern that a kid could pull back and vape on one of these high-voltage low-resistance devices, within a few months the distributor brought back to me an e-cigarette they had manufactured in China, which had a safety device to get it powered up. It was a child-proof lock.
What we are studying today is changing so rapidly that we don't know if engineering principles can be brought to bear to reduce the vaporization of any heavy metals. Would coating with an inert compound the heating element eliminate the heavy metal that comes out of the copper that is currently used?
We are not experts. We rapidly are having to reach out to engineering colleagues and others who know this, because the market is moving faster than we are able to.... We are behind the eight ball in understanding it.