280 Degrees Celsuis

[ashdaburned]

And I can't believe that if you're right nobody else is jumping on this.

I was starting to feel stupid for asking this as no one was answering. atleast i know i'm not alone with this thought now.

[trog100]

My question EXACTLY is this.
Why did the FDA test the E-CIG at 4x the normal operating temp?
Why is it that they claim there are carcinogens in them, when they had to use 280C to cause them?
I'm asking a science question.
Is there a valid reason to use those temps and make those claims?

I just simply noticed this, and no one else has asked. So, either NO ONE else noticed, or i don't understand and am the only one to ask this. I would hope its the latter, being i would like to trust the FDA.

why on earth would you assume 60c is the normal operating temperature.. it isnt so why assume it is.. ???

trog

ps.. just a hint as to how hot e cig heater coils might get in certain circumstances..

C F Color

400 752 Red heat, visible in the dark
474 885 Red heat, visible in the twilight
525 975 Red heat, visible in the daylight
581 1077 Red heat, visible in the sunlight
700 1292 Dark red
800 1472 Dull cherry-red
900 1652 Cherry-red
1000 1832 Bright cherry-red
1100 2012 Orange-red

C= Centigrade
F= Farenheit

[katink]

What I heard/read (and I think it was from Janty, but really don't know anymore if this was in some site-blurb, or from a post somewhere on some forum, or whatever: wish I did know...) about this:

The coil itself gets 'red-hot' (so a high temperature) - but temp drops very fast when taking some distance from the coil: at less then a cm away (1/3rd inch?) the temp has allready dropped to around 60C; and it is at around this distance, where the e-liquid gets vaporized and sent on it's way out of the e-cig.

I do think this makes sense - how else could we ever keep that metal tube in our fingers, if temp. would nót drop very fast at any distance from the heating-element...

I'm sure this would need looking into a lot more, to get graphs or anything worhtwhile out on it; perhaps some of the scientific-inclined people here could take this up and look into it further (or perhaps there allready are some findings along this line somewhere in some post which I didn't come across... did you happen to do anything along this line - so measuring distance and temps - yourself Trog?)

[ashdaburned]

why on earth would you assume 60c is the normal operating temperature.. it isnt so why assume it is.. ???

trog

ps.. just a hint as to how hot e cig heater coils might get in certain circumstances..

C F Color

400 752 Red heat, visible in the dark
474 885 Red heat, visible in the twilight
525 975 Red heat, visible in the daylight
581 1077 Red heat, visible in the sunlight
700 1292 Dark red
800 1472 Dull cherry-red
900 1652 Cherry-red
1000 1832 Bright cherry-red
1100 2012 Orange-red

C= Centigrade
F= Farenheit

I assumed the FDA scientists can accurately measure the temperature of something correctly.

The temperature of the heating element in each e-cigarette was determined by inserting a thermocouple and then activating the e-cigarette by drawing air through it. These temperatures ranged from 40 to 65°C.

Source:http://www.fda.gov/downloads/Drugs/S.../UCM173250.pdf
Very last paragraph of page 2.

If they can't do that correctly then that invaliadates EVERYTHING they said about them. IMHO

EDIT* BTW you said how hot they MIGHT get. As a manufacturer what are the coils made of. as different metals take different temps to acquire those colors. and i also would imagine that looking at the color of the atty would be less accurate then connecting a thermocouple. If you have information to say that there is inaccurate info in this report, that is just more ammo to dispute their report.

And about the findings, i haven't come across but two other people to bring this up, both blogs.