So long as a deposit is 'burning' away on the coil, the system is not perfect. This is the elephant in the room.
Considering how many people profess to be critical thinkers and value science, it is amazing that this fact has been staring us in the face all along and almost nobody cares to address it.
It is often said that e-juice has been tested and that each ingredient is regarded as safe. However, it is not so much what is in the juice that we need to worry about but what it is that we are inhaling - what is in the vapor. That this is not the same is clear by the deposit buildup.
The dry-residue is not just a nuisance - it degrades through getting heated by the coil (at times to red-hot); hence the occasional 'bad-smell'. While all this is going on some gases, possibly noxious, might be released in the vapor.
Hence, I see the number one priority as the devising of 'clean' juices, by which I mean juices that leave no deposit. No dry-residue from flavorings or from the nicotine preparation. And not using VG because that has been shown unequivocably to leave a deposit all by itself, as I often expected (this eperimental result is a big step forward and we can find an alternative for those allergic to PG, perhaps PEG-400).
With a 'clean' juice it is possible that 'what goes in' equals 'what comes out', though the vapor would still need to be tested to know that for sure (that heat is not decomposing/degrading any of the ingredients without any of the products being non-volatile).
Furthermore, consider that Ruyan, who are likely to have studies this as much as anyone, chose PG as the base, not the cheaper VG, even though VG also produces more fog. And they don't include flavorings that were developed for food, not being vaporised.
Consider also that the results chart for the vapor are far more 'noisy' than the chart for the juice. So changes are taking place and there seems to many more components in the vapor than in the juice.
Deposit-free juices could be devised. It is not too big a task. It needs to be done.
Considering how many people profess to be critical thinkers and value science, it is amazing that this fact has been staring us in the face all along and almost nobody cares to address it.
It is often said that e-juice has been tested and that each ingredient is regarded as safe. However, it is not so much what is in the juice that we need to worry about but what it is that we are inhaling - what is in the vapor. That this is not the same is clear by the deposit buildup.
The dry-residue is not just a nuisance - it degrades through getting heated by the coil (at times to red-hot); hence the occasional 'bad-smell'. While all this is going on some gases, possibly noxious, might be released in the vapor.
Hence, I see the number one priority as the devising of 'clean' juices, by which I mean juices that leave no deposit. No dry-residue from flavorings or from the nicotine preparation. And not using VG because that has been shown unequivocably to leave a deposit all by itself, as I often expected (this eperimental result is a big step forward and we can find an alternative for those allergic to PG, perhaps PEG-400).
With a 'clean' juice it is possible that 'what goes in' equals 'what comes out', though the vapor would still need to be tested to know that for sure (that heat is not decomposing/degrading any of the ingredients without any of the products being non-volatile).
Furthermore, consider that Ruyan, who are likely to have studies this as much as anyone, chose PG as the base, not the cheaper VG, even though VG also produces more fog. And they don't include flavorings that were developed for food, not being vaporised.
Consider also that the results chart for the vapor are far more 'noisy' than the chart for the juice. So changes are taking place and there seems to many more components in the vapor than in the juice.
Deposit-free juices could be devised. It is not too big a task. It needs to be done.