Any interest in determining nicotine--by DVAP

[BlondieLocs]

Vaporer, the topic we've been discussing in PM might be more relevant to this thread than you realize.

Hey... weren't you guys ever taught that whispering is rude? C'mon.. share with the class.

[DVap]

Vaporer, I think the things we were discussing about BlondieLocs in PM are relevant as well.

[Vaporer]

I think so too lmao
I didnt want to thread jack since its so diff.
You are looking for where its going and I'm trying to stop it from going there.
That atty is running strong.
Later today after I get some sleep I'll make the next step up and see what it can do.
If I can run it cool enough you may not have to look very far......hahaha

[BlondieLocs]

Oh ha. Ha. Ha.

[exogenesis]

Been wondering about this random thought for a while,
when the nicotine is determined by juice titration,
acid is added to an indicator pH 'end point' (ph 6/6.5).

Question is if you titrate 'up' with 0.1N NaOH, do you get a significant
required volume to get a titration point (e.g. with Phenolphthalein, pH 9.5-10) ?

It's either:

yes, in which case what are you titrating, the 'rest' of the nic. or something else ?

or

no, which would sort of verify all the nic. is in free-base form.

Or has that already been done ?


DVap & Vaporer, are you talking about multi atomisers or what,
any chance of a link to a relevant thread ?


DVap/Vaporer 1, BlondieLocs 1
Score draw (so far)
Referee taken to hospital.

[kinabaloo]

My thoughts on the potential for temperature controlled heating in atomisers:

Temperature control of the atomiser heater coil

[The Wrong Man]

Fantastic thread, guys - all very interesting!

One thing I've been wondering about, though: What happens to PG when heated in the presence of a catalyst and then rapidly condensed? If it were breaking down to propanoic acid (maybe via propanal?), your final condensate would be more acidic and would therefore throw off your titration calculations. You could easily test this by just running straight PG through the auto-puffer and simply check the PH before and after.

Long, long time since I studied any chemistry so I'm likely way off but hey, if you don't ask, you don't learn

[Þornbjörg]

DVap, I was woooondddderrrrinnnngggg.....

Since you're doing excellent lab testing that has been a long time coming, would you consider taking all of your data and writing a full analysis and pursue publication with it? There are few here qualified to do what you are doing, and even less with the capability of doing it.

[DVap]

DVap, I was woooondddderrrrinnnngggg.....

Since you're doing excellent lab testing that has been a long time coming, would you consider taking all of your data and writing a full analysis and pursue publication with it? There are few here qualified to do what you are doing, and even less with the capability of doing it.

I don't get paid to publish reports on vaping, but for analyzing environmental samples, so the employer support ($$$) necessary would not be present. They would likely give me at least an annoyed roll of the eyes about the cryo-testing done so far since I'm technically using employer resources on the side.

I don't have the unfettered resources available to me that I would need to do any of this at a comprehensive level. In short, doing some of these test "under cover of darkness" requires compromises that I would not make if I were being paid to do it. While I'm pleased with what I've been able to do, it falls short of what I would consider "professional" standards.

(On the other hand, the FDA's report fell far short of what I would consider "professional standards" but that didn't stop them from publishing...)

[DVap]

Been wondering about this random thought for a while,
when the nicotine is determined by juice titration,
acid is added to an indicator pH 'end point' (ph 6/6.5).

Question is if you titrate 'up' with 0.1N NaOH, do you get a significant
required volume to get a titration point (e.g. with Phenolphthalein, pH 9.5-10) ?

It's either:

yes, in which case what are you titrating, the 'rest' of the nic. or something else ?

or

no, which would sort of verify all the nic. is in free-base form.

Or has that already been done ?

titrating up would not be meaningful since the solution is in the alkaline pH range to start with.

DVap & Vaporer, are you talking about multi atomisers or what,
any chance of a link to a relevant thread ?

This is Vaporer's baby.. I've encouraged him to start a thread on it but he's so dammed stubborn.