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I would say that 100 times lower levels is not a small difference (1% of the content of tobacco cigarettes). But let me clarify that this refers to the average from all positive-tested liquids. There were liquids with very high levels, exceeding 2000ppm. These were of course much higher compared...

And a last thing. The evidence we have so far supports that diacetyl is a hazard. Better accept it before we have cases of disease in e-cigarette users. Because after that, there will be no e-cigarette. Of course we do not know how much is needed to cause damage. We do not know many other...

I disagree with the last comment. The only reason we were asked and contacted by the journalists is because we did the study. It is naive (no offense, i am not attacking or insulting anyone) to believe that none else would do the study if it was not for us. The big difference is that if someone...

Of course i never said i am a surgeon because i am not. Moreover, i am not sure what your perception of surgeons is, but surgeons do not study cardiology and do not become cardiologists before becoming heart surgeons. They are two distinct specialities. In fact, e-cigarette or even tobacco...

That is wrong because I made a mistake in my blog. It has been corrected, the findings were 100 and 10 times lower compared to TOBACCO CIGARETTE SMOKE!! NIOSH submits letter to the editor concerning our diacetyl study

First, i am from Greece, not from India. Second, i never said this is anything but a Blog. But there is a simple reason why it exists: to provide information about research in an easy-to-understand language. Obviously, most of vapers are not experts, do not have access to scientific journals and...

We perform many studies at the same time. Otherwise, it would be impossible to have so many pubications over the last 2.5 years. Many people are waiting for the temperature experiments. We have not released anything yet, but the formaldehyde results are relevant, and we will progress with more...

Concerning the "realistic studies", as far as i know the vast majority of vapers (who are not members of e-cigarette forums) vape at low wattage levels. Subohm vaping and direct lung inhalation is still a minority. However, this means nothing and such patterns should be studied. Easy to say...

You probably don't get the issue with direct lung-inhalation or higher vapor production in general. Formaldehyde (and other aldehydes) is mainly produced from heat degradation of liquid components (mainly glycols). If we assume the best case scenario, that the thermal degradation rate will not...

The problem was mainly the use of very high amounts of flavoring compounds in a small minority of the liquids. The levels were higher than what is recommended in food products. In my opinion, this creates an issue considering that very little is known about inhalation of these compounds. I have...

The "weigh" of the WHO or anyone else is useless when you talk about scientific facts. The only existing risk is that of being discredited if you distort scientific facts. And such a risk is a problem that the WHO will face, sooner or later. There is some previous history for it, e.g. the flu...

Gad Consulting had 2 presentations and 2 participations as panelists. These people are what i call problem creators and solvers. Their job is to solve problems. If there is no problem there is no money, so they have to create a problem and then come back to solve them (and get the income from...

Let me clarify something. I was not there to make a political statement, and i did not. I was there to clarify some issues and present some facts which were grossly distorted by previous speakers. It was not my decision to have FDA regulate e-cigarettes. I did not support or reject that, and i...

The diagrams are with kayfun Lite, fully assembled and taking puffs in the same way as a regular vaper. Silica wick 3mm, liquid: VG 90%, water 10% (weight/weight ratio. No flavor, no nicotine).

I want to congratulate rusirius. In our experiments we have seen many of the things he mentions. I just wanted to add that evaporation is not only happening on the surface of the coil but may also happen between the wraps, because heat also goes to the wick at the gap between wraps. But he is...

We are in the process of setting up the lab in a university to measure metals in vapor. We hope the crowdfunding campaign will be successful enough to allow us to porceed with these tests. It is important because we can easily detect which metals are safer to use, and the industry could make use...

Dry burn helps in nothing but accelerating the thermal breakdown of the metal. Use acetone and water or ethanol to clean the wires before making the coils. It is really useless and probably harmful to dry-burn the coils. I am about to receive the DNA device witin the next few days. It is going...

You are exploring the issue of e-cigarettes from a political perspective, which in my opinion is wrong. First of all, knowledge never hurts anyone. So, IF high wattage is unsafe, who will get hurt by knowing it? Science is not politics, and we do not work in such a way. But allow me to expand to...

It is a different pattern. I am not characterizing it as normal or abnormal, it is just different. You need different experimental settings to evaluate direct lung inhalation. The puff duration, puff volume, even consumption per puff are extremely different.

Cloud chasers are direct lung inhalers. This is a completely different story and needs separate experiments. These people are inhaling a large volume of air per puff. That is completely different pattern and it cannot be compared with regular vaping.