Flavourart published test results for their entire line of flavorings.

[Exchaner]

Heat is not the same thing as temperature. You can put 50w to one coil and 10 watts to another and the 10 watt coil will have a higher temperature. It depends on the heat flux, heat capacity and other variables with the build. All things being equal, 50 watts will result in a higher temp (or at least get to temp faster) than 10 watts, but not all coils are equal. My point is that saying you're firing it at 10 watts tells us nothing about the temperature of the coil. 10 watts is enough power to send the coil temp through the roof (depending on the coil). Still, though, a wet coil should not be catching fire as the coil wont go much above the boiling point while wet. So, there's something wrong with your liquid somewhere (or perhaps something wrong with your coil or mod).

According to Steam Engine:
Heat Flux at 10 watts : a modest 200 mw/mm2.
Heat flux at 50 watts - an astronomical 1100 mw/mm2 Both on 30 gauge, 6/5 wraps on 2mm.

It probably makes no difference since the juice will catch fire the moment it reaches the ignition temp.

As for something being wrong with my coil, possible but not likely, since it happened on three separate coils. They were all wet with cotton inside. Caught fire while I was pulsating them to get rid of the fresh cotton taste. The same thing probably happens when we are vaping - the only difference being we do not see it happening.

It is all to be expected since we are vaping flammable liquids- period. And doing so at our own peril ....

 

[BigEgo]

According to Steam Engine:
Heat Flux at 10 watts : a modest 200 mw/mm2.
Heat flux at 50 watts - an astronomical 1100 mw/mm2 Both on 30 gauge, 6/5 wraps on 2mm.

You're comparing apples to apples, so of course 50 watts will result in a higher temp than 10 watts on the same coil. The only point I was making is 10 watts doesn't tell us much unless the know the exact characteristics of the coil. Also, 10 watts (depending on how long you fire it) is plenty power to get a coil to very high temps.

It probably makes no difference since the juice will catch fire the moment it reaches the ignition temp.

It shouldn't reach ignition temp if it is saturated. I can only think of a few scenarios to explain your situation:

1) You have accidentally bought something other than PG or VG. Or the bottles you bought are falsely labeled.

2) Your flavors are somehow flammable. Some flavors are indeed flammable but it shouldn't be an issue if you use small amounts that are highly diluted.

3) There is something wrong with your mod. Perhaps it is firing much higher than 10 watts. (Even if this is the case, it shouldn't catch a wet wick on fire).

4) Something is wrong with your coil. Hot legs, etc.

As for something being wrong with my coil, possible but not likely, since it happened on three separate coils. They were all wet with cotton inside. Caught fire while I was pulsating them to get rid of the fresh cotton taste. The same thing probably happens when we are vaping - the only difference being we do not see it happening.

.

I've never seen my coil or cotton catch fire when wet. Ever.

 

[Exchaner]

It shouldn't reach ignition temp if it is saturated. I can only think of a few scenarios to explain your situation:

1) You have accidentally bought something other than PG or VG. Or the bottles you bought are falsely labeled.

2) Your flavors are somehow flammable. Some flavors are indeed flammable but it shouldn't be an issue if you use small amounts that are highly diluted.

I've never seen my coil or cotton catch fire when wet. Ever.

See the following thread for how easy it is for vg to ignite. I put 1 ml in a tea spoon and fired it up on top of my stove. Depending how intense you make the flame, you get ignition anywhere from 10 seconds to 30 seconds. Jimi did the same thing in a frying pan, but it did not catch fire - apparently because the frying pan was too large and/or his stove was electric. He did get fire by torching from above. I can not explain why three of my coils ignited. Flavors are not a factor since I usually vape unflavored. I tested for hot legs and everything else. The only factor I can imagine is that I was using spaced coils allowing excess liquid to accumulate in between the loops.

My Wick Caught On Fire !! | E-Cigarette Forum
My Wick Caught On Fire !! | Page 2 | E-Cigarette Forum

 

[mhertz]

Vg/pg ignites upon temperatures very high, so if you have checked for hotlegs, then the only left place to happen, is insufficient wick/coil contact somewhere along the length of the coil(usually at sides, but could be anywere). Spaced winds actually cool more than closed... I use spaced winds often(I constantly change back and forward, sometimes several times a day as today! Frustrating to never beeing able to make ones mind up about such matters ) and have never experienced this. I'm not daubting you in any way, though

 

[Exchaner]

if you have checked for hotlegs, then the only left place to happen, is insufficient wick/coil contact somewhere along the length of the coil(usually at sides, but could be anywere).

Quite a possibility. I sometimes find my cotton shrinking when wet - contrary to what I have heard on other threads. Perhaps I am making my cotton too fluffy before insertion. Once the juice is introduced, the cotton "settles" down.

 

[mhertz]

Yeah, there's so many different schools of thought with regards to cotton densities and preparement etc. It's ok to have the cotton fluffy before insertion, I do too, but the rule is generally just if it's fluffy during insertion, then it needs more resistance i.e. more snug and if rolled first, then inserted more looselly... Cotton expands when wet, however, the pressure that forms when it gets hot makes it retract, I believe... I just follow the principle of having some restriction but not a lot, snug thereabouts and then a good trick is to fire it during the full time you take a draw, e.g. 4-5secs and check for anything glowing at all.

I also just read on an older thread on ................., someone stating that not only can you get a dry-puff and burn your wick, but that it also was possible to actually get burning your juice... It was just a thread related to coil id's though and not juice-burning in general.

So if your wicking isn't fully up to snuff, or you take long draws/chainvapes/use high wattage/small id of coil, then instead of getting a regular drypuff, then you can get a "juice-burn" possibly...

 

[mcclintock]

That's dissapointing they don't publish any info whatsoever on acetoin or butyric acid. From what I hear, combining these should be avoided. There may even be cases where mixing a diketone-free juice with a regular one is worse than just sticking with the regular.

As to the wick thing, the closest mine came to that ended up smelling like a house burned down. However I disagree strongly that cotton expands when wet. Maybe in terms of acting as a valve in a bottom coil tank it does, but otherwise it becomes limp and soggy. I built a large diameter coil and wicked it mid-tight only to taste burning. Opening up the RDA, I could see glowing on the top. Touched the cotton and it collapsed visibly away from the coil at the top. Watching youtube, it appears "make sure to not wick too tight" is code for "I'm about to stuff more cotton through this thing than you can believe".

 

[WhiteHighlights]

View attachment 488527

The one on the left is Custard Cream, the one on the right is just Custard. The left hand bottle label is fuzzy, it had leaked some in shipping and messed up the label.
So are they repackaging? Different products? or what?
Both have Lot/Batch numbers.

Did you buy from Bull City? The one on the left looks like FA original packaging, the one on the right looks like BCV repackaging. They are the same.

ETA: FA also has a line of Kitchen flavors that are not recommended for vaping as they contain D/AP. They are very upfront on this issue.

 

[DoubleEwe]

View attachment 488527

The one on the left is Custard Cream, the one on the right is just Custard. The left hand bottle label is fuzzy, it had leaked some in shipping and messed up the label.
So are they repackaging? Different products? or what?
Both have Lot/Batch numbers.

Received my order direct from FA Italy and I can confirm that Custard Cream = Custard.
Ordered the item listed on website as Custard and Custard Cream was on the label of the received flavouring.

I can also confirm that the new caps/bottles are not as good as the old ones.

 

[Robert Cromwell]

Received my order direct from FA Italy and I can confirm that Custard Cream = Custard.
Ordered the item listed on website as Custard and Custard Cream was on the label of the received flavouring.

I can also confirm that the new caps/bottles are not as good as the old ones.

So they probably did change the formulation and the one on the right is an older untested version. And yes the new tops suck.

 

[Robert Cromwell]

Did you buy from Bull City? The one on the left looks like FA original packaging, the one on the right looks like BCV repackaging. They are the same.

ETA: FA also has a line of Kitchen flavors that are not recommended for vaping as they contain D/AP. They are very upfront on this issue.

I can't remember if it came from BCV or ecigexpress. But the one on the right has batch and lot numbers, etc does not look repackagd.