Any interest in determining nicotine--by DVAP

[kinabaloo]

Interesting threads on blood levels of nicotine :

Blood levels of nicotine - measurements and how to

[Zaija]

Instead of everyone testing their liquids, could each person who has tested a liquid from a supplier state the nicotine content on here?

Or could that information not be 'legally' posted on the forums?

Very interested in this procedure, though sounds very difficult.

[DVap]

We've not disappeared... seems the action is over here lately.

[DVap]

Originally Posted by Zaija

Instead of everyone testing their liquids, could each person who has tested a liquid from a supplier state the nicotine content on here?

Or could that information not be 'legally' posted on the forums?

Very interested in this procedure, though sounds very difficult.

I've posted quite a bit of that on this thread, usually testing on behalf of suppliers who've sent me samples, or forum members who've sent me samples.

I'm quick to post good results, but more hesitant to post bad ones since one sample isn't a good representative of the population.

[unmatter]

Originally Posted by DVap

Citric acid decomposes at 175°C into water and aconitic acid (the body can handle it) which itself decomposes around 200°C with acrid smoke. The temperature at the business end of an atomizer (especially one on the dry side) would likely easily reach 175°C (347°F). In short, citric acid, at a glance, isn't something I'd want in my e-liquid.

Just to put things in perspective. According to a study quoted by Health New Zealand The Ruyan operates at only 54°C. While I'm sure other brands or mods operate at higher temps, I'm not so sure that it's common for ecigs to operate at 175°C. So maybe citric acid is not so dangerous in eliquid after all.

I have some tobacco flavor that I bought from seedmans that has citric acid in it, and when I read your post I became concerned. So I looked into it further and found the operating temp for the Ruyan was 54°C.

Before I found the temp I was considering if it was worth it to mix in some Ca(OH)2 and filter out the resulting calcium citrate salt. Not sure what temp my 401 operates at, but I'm hoping it's not far off from the Ruyan.

[kinabaloo]

Only a small part might get carried out in 'spitted off' liquid droplets; most of the citric acid will be decomposed inside the atomiser (at those times the coil runs dry/hot). So it would be best not to use it.

[Vaporer]

Originally Posted by unmatter

Just to put things in perspective. According to a study quoted by Health New Zealand The Ruyan operates at only 54°C. While I'm sure other brands or mods operate at higher temps, I'm not so sure that it's common for ecigs to operate at 175°C. So maybe citric acid is not so dangerous in eliquid after all.

I have some tobacco flavor that I bought from seedmans that has citric acid in it, and when I read your post I became concerned. So I looked into it further and found the operating temp for the Ruyan was 54°C.

Before I found the temp I was considering if it was worth it to mix in some Ca(OH)2 and filter out the resulting calcium citrate salt. Not sure what temp my 401 operates at, but I'm hoping it's not far off from the Ruyan.

This is assuming, a bad thing to do, that only citric acid is the only acid in seedmans mixture. Some have vinegar ( acetic acid) and "Natural and Artificial Flavors" some which may be reactive with Ca(OH)2. So you are not just possibly "salting out " a single compound. Some may precipitate sone stay soluble. Not knowing the exact constituients of a manufacturers "hodge podge" could open a door for distaster or change so much the attempt deafeats the purpose my altering so much the original no longer serves its purpose.
DVap, a chemist with yrs of experience, went for all the alkaloids, knew how to get them and remove what he put in and recover the alkaloids back. Much different than what you are attempting IMHO.
Caution cannot be expressed enough here.

frankie1, ok....keep the snus for an after hrs tool.

[kinabaloo]

Atomisers don't run at a controlled temperature (though they should). At dry times the coil will reach 400C+

I wouldn't worry too much if you want to use up what you already have, but it would be best if manufacturers didn't use it.

[DVap]

We should remember the caution to not rely too much on a single basic principle when dealing with a complex system.

To assume that a relatively low concentration of citric acid in an eliquid will behave like pure citric acid in air might not be a correct assumption.

[kinabaloo]

A little might get ejected by misting effect (spitted out) but most will deposit on the coil and decompose when the coil gets hot. Not complex.