New studies find carcinogens in vg and pg at high temps, even in tootle puffers

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Rossum

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Yep, top side of end coil loop. I started putting extra "fluff" on the two coils ends.

Ohhh !
I check my rayon wicks to make sure they didn't shrink or stretch out of the coil... and re-mush them in with 2 straight pins, one from each side - I kind of pick up a tad of wick with the pins and mush into the coil.
That shouldn't be necessary if you have enough rayon in your coil to begin with and you trim your tails properly.
 

BrentMydland

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28 gauge Stainless Steel Wire - 430 Grade Nickel Free - 200 feet - 100% Guarantee - Creating Unkamen

I have not used this 430ss. I'm still working on a spool I got from a friend. It came from zivipf in Germany.

138 tcr should work with 430ss. See chart.
View attachment 640267

When you get a new spool of wire, any wire, it's a good idea to test it's tcr using the 420°f dry cotton browning test. Once I find the actual tcr for a new spool I mark the tcr on the spool.
This one has a couple if incorrect numbers and for what ever reason mistakenly labels resistherm as NiFe30. I've also never understood the recommended resistances on that chart and I think it gives the wrong idea. All else being equal the higher the resistance of any TC build the more accurate it will be and as far as I know there is no real basis for the numbers they recommend.

Here is a much better chart:

a714f2f91e94a777ee78c0984952e1ba.jpg
 

dwcraig1

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This one has a couple if incorrect numbers and for what ever reason mistakenly labels resistherm as NiFe30. I've also never understood the recommended resistances on that chart and I think it gives the wrong idea. All else being equal the higher the resistance of any TC build the more accurate it will be and as far as I know there is no real basis for the numbers they recommend.

Here is a much better chart:

a714f2f91e94a777ee78c0984952e1ba.jpg
Anyone remember just why Invar is on the list?
Hint: Unkamen's NiFe52
I think I got the first spool of it, still have it, most were either not shipped or returned....I think.
 
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Katya

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That view is too US-centric. The FDA does not control what happens in most of the world. They don't even control what's developed in the US, only what's commercially marketed here.

Very true. As long as we have legal access to those new inventions. As you said, the FDA does control what is commercially available here. For years I've been getting my sunscreen from Europe (no idea how legal it was), and, on occasion, a little bit of Italian salami and French cheese (not approved by the FDA here :facepalm:)....

If the FDA regs are not challenged, pretty much everything and anything we're using now may become illegal. How many of us are able/willing to travel to Europe or China to get a new mod or atty and smuggle it back home?
 

Cosmic_Glaze

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This one has a couple if incorrect numbers and for what ever reason mistakenly labels resistherm as NiFe30. I've also never understood the recommended resistances on that chart and I think it gives the wrong idea. All else being equal the higher the resistance of any TC build the more accurate it will be and as far as I know there is no real basis for the numbers they recommend.

Here is a much better chart:

a714f2f91e94a777ee78c0984952e1ba.jpg
The reason I never used TC is cause it never worked correctly with pre-set SS settings on my mods. When I plugged in the tcr numbers from steam engine, bad vape as well... today I did cotton burn tests on 2 mods to find out the correct tcr # to plug in on them. The tcr#s are now calibrated on both mods and are way different than what steam engine states. ( prob due to the mod) Both a single coil Rta and my KF5 are now in SS and giving me a similar vape to Kanthal... I can't set off the "Temp Protection" at 420f... Untill further studies come out and this can be clarified Im not stress over it.... as a matter of fact I think I'll enjoy the rest of the night with my Nautilus Mini in wattage mode. It's the tank that got me off the Cigs, and will always have a place in my heart......oh, and my lungs.
 

Cosmic_Glaze

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Very true. As long as we have legal access to those new inventions. As you said, the FDA does control what is commercially available here. For years I've been getting my sunscreen from Europe (no idea how legal it was), and, on occasion, a little bit of Italian salami and French cheese (not approved by the FDA here :facepalm:)....

If the FDA regs are not challenged, pretty much everything and anything we're using now may become illegal. How many of us are able/willing to travel to Europe or China to get a new mod or atty and smuggle it back home?
TBD...on how good KF6 reviews are:D..JK

Honestly the FDA has me thinking about stocking up on a few Mech mods. Screw the TC mods they won't last the test of time. You can fix any mech with a Home Depot visit.

Yes, we do have to challenge the FDA. Kinda crazy that there probably gonna legalize marijuana where I live but then make Vaping illegal? It's because the government can make $$ on it plain and simple..
The government is threatening to ban Vaping to scare all of us. So, when they decide to tax the hell out of it we will all be relived that we can still vape and won't put up much of a fight on the huge taxes..

Now a possible reason for these negative and half :censored: studies.....

If they can make vaping look as bad as smoking does now to the general public the majority of voters will not care about the tax only the vapers will and were the minority. Cigs are almost $10 a pack now where I live. If they increased the tax another $5 tomorrow I would not care. I don't smoke anymore, cigarettes are harmful and I really could care less if they do. Get my point?
Could be wrong, but if the government can make money on Vaping products it will not be banned.
If they can't we're probably screwed.
Just a theory about the madness that's going on.
 

Alter

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Could be wrong, but if the government can make money on Vaping products it will not be banned.

In Canada that statement is true, they are trying to regulate it here and once regulated they are going to tax it to be as expensive as ciggys to keep up with the funding that cig tax provided. Down in the US its a different story how Big Tobacco owns some states so there might be some name changes to state of Paul Mall or Marlboro state if the FDA doesn't effectively ban vaping. Now that vaping has taken over smoking by storm, americans are really going to find out who's truly running the show and it ain't the government but BT using the government as pawns for their own profits. Its sad to say it but its true.
 

Cosmic_Glaze

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In Canada that statement is true, they are trying to regulate it here and once regulated they are going to tax it to be as expensive as ciggys to keep up with the funding that cig tax provided. Down in the US its a different story how Big Tobacco owns some states so there might be some name changes to state of Paul Mall or Marlboro state if the FDA doesn't effectively ban vaping. Now that vaping has taken over smoking by storm, americans are really going to find out who's truly running the show and it ain't the government but BT using the government as pawns for their own profits. Its sad to say it but its true.
That was my positive view on it. True, if the government can't make more money on it to justify going against the big pharma and the tobacco companies wishes, then my last statement will come true...we will need a miracle or we're screwed.
 

Katya

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In Canada that statement is true, they are trying to regulate it here and once regulated they are going to tax it to be as expensive as ciggys to keep up with the funding that cig tax provided. Down in the US its a different story how Big Tobacco owns some states so there might be some name changes to state of Paul Mall or Marlboro state if the FDA doesn't effectively ban vaping. Now that vaping has taken over smoking by storm, americans are really going to find out who's truly running the show and it ain't the government but BT using the government as pawns for their own profits. Its sad to say it but its true.

Well, California is already raising taxes on vapor products (July 1, I believe), so maybe there's some hope for us. But California is raising taxes on everything all the time, so who knows.
 

Domejunky

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Not necessarily. Both PG and VG are hygroscopic; they love to pull water out of the air and it's well-nigh impossible to prevent that. Even small amounts of water reduce the boiling point rather dramatically.

But why not find out? Get a thermometer like this and measure it?

Probieren geht über Studieren! :D
That's what piqued my interest in the paper talking about getting the water in the juice to boil, which would then carry PG/VG/Flavourings.

I seem to remember one of the speakers correcting themselves (might have been John from Evolv) - they started off saying vapour then changed it to aerosol.

Maybe we're vaping water vapour mixed with aerosolized PG/VG/Flavour, which would mean much lower temperatures, and would explain the apparent lack of aldehyde components in real-world tests...
 
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Katya

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The other question I have is if you are adjusting the tcr settings to read diff than the suggested value from SE are you still getting correct temp readings or are you just tweeking the numbers to get a good vape.. I have seen many peoples posts online that adjust the tcr to get a vape that they like from the wire,...but is that temp control?? I would think not if it is not in the correct tcr setting. I could be wrong, but if you are not in the correct setting for the wire, your temp control would be off

Bingo! My sentiments exactly. It is my understanding that unless you're using a specific alloy (mostly ss316) your mod is tuned for, your temperature readings will not be correct. And tcr mode is not available on every mod and is rather confusing. So unless you're a techie or a TC expert, you really don't know what the actual temperature of your coil is, anyway.
 
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Katya

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Taxes on tax, that's us

On the other hand, maybe it's not a bad thing. If Sacramento gets addicted to vapor taxes, they'll never let go. :p They'll be installing ejuice vending machines in schools before we know it.
 

kates

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Really interesting read this morning but most of it is completely over my head. Much like the vaping research scene - I am always way behind what is happening in real time on ECF...

What I believe:

We have known since 2014 that high temperatures can cause high levels of emissions from PG & VG (CE4 study). Dr F. as a result did a study (using KFL's) showing there needs to be 'dry puff' conditions for this to occur when vaping and vapers will not continue to vape under these conditions. The 'subtank' study also showed that there were no concerning emissions with 3rd generation tanks under normal vaping conditions. Dr. F still holds this position I believe - so yes, dry hits/ taste are relevant to those vaping with these type of tanks at these levels given the vape-related research to date.

In his most recent comments this week re: the benzyne issue Study titled “Benzene formation in e-cigarettes” found that air has more benzene than e-cigs he states 'Also, scientists completely ignore the dry puff phenomenon..' which is what leads me to believe he still sees this as relevant.

So - if vaping under above conditions (using wattage, kanthal, silica wick (cotton with subtank)) Dr. F has clearly stated vapers will not continue under temperatures likely to produce high emissions. You don't have to agree with him of course - but I am happy to listen and act on what he says as I'm sure he keeps up with all relevant research and can interpret it better than I can (and I do vape at these levels so it applies directly to me). If he revises his decisions I will revisit. As a lay-person vaper I would assume the results using TC & above parameters would be similar because TC will prevent dry hits (so again, yes dry hits do matter at this level of vaping) but I can't point to any studies which prove this and YMMV (on all of the above).

Of course many vape well beyond these parameters so the above research does not apply directly to them - and there is no data to show if the dry puff scenario applies here too. So if you are using 50w, 100 w, using TC etc. - who knows? It is important we have proper research into this area and so far there has been none published. Hopefully, if evolve believe what they seem to be implying they will push for research and adapt their boards accordingly if necessary. Dr F does say in the above link:

' And this is not the first time, we’ve seen it in the past (and recently) with formaldehyde and other toxic aldehydes (just wait for a couple of papers that will be published soon)'.

(my bold) so it looks like we may have some more info on this soon. :thumb:
 

awsum140

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Just don't ask me to wear a tie, m'okay?

You have to wear a starched, pressed, white shirt with a short, heavily starched, collar, polka dot bow tie and horn rimmed glasses (whether you need glasses or not). If you don't, the veracity of your results will be seriously questioned.
 

sonicbomb

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For me the key issue in relation to the test findings that kicked off this whole discussion is ~ does a coil at x temperature equal juice at x temperature. I'm beginning to strongly believe that Leidenfrost effect that Imfallen_Angel mentioned way earlier back in this thread means that it does not get even remotely close. Bear in mind that this effect allows a naked hand to be plunged into liquid nitrogen at -321F and remain uninjured. I have also seen the same test done of mythbusters using a wet hand and molten lead at +621F.
 
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