If his WTA product is so poorly refined that he has to add nicotine to it, where are the extra alkaloids coming from? Wouldn't such a product be expected to have a lower WTA component than a full spectrum WTA extraction?
I said I was going to bed, but then I started into an expense report and pretty soon here I am again to answer your question in more detail than you could possibly want.
I don't agree with the statement:
"WTA is more than just a single chemical, so we cant just assign a mg strength to it like with nicotine."
We can do that and with precision. Again, it's all in how you define WTA concentration. Here is how I define WTA concentration, and expect to see it defined by others.
If simple math makes your head go all swimmy, you might consider NOW as a good time to run far and run fast.
WTA concentration in mg/mL = total mg of alkaloid isolate per mL of e-liquid.
If I extract WTA from tobacco and purify it on a small scale, I might end up with 1 gram of pure WTA. This 1 gram of pure WTA will contain about 950 mg of nicotine and 50 mg of all other tobacco alkaloids combined.
If I take this 1 gram of pure WTA and dilute it to a final volume of 50 mL, the WTA concentration is:
1000 mg / 50 mL = 20 mg/mL.
Here's the important thing to remember: This applies to an e-liquid where the sole source of alkaloid content is from a purified WTA isolate.
So now we have 20 mg/mL WTA eliquid. I would call this a "WTA exclusive" e-liquid.
If you break down this 20 mg/mL WTA exclusive e-liquid into it's alkaloid "sub-concentrations (assuming the 95%/5% spread), then you get:
Nicotine concentration = 20 mg/mL * 0.95 = 19 mg/mL nicotine
Minor alkaloids (total) = 20 mg/mL * 0.05 = 1 mg/mL minor alkaloids combined
Again, this is a 20 mg/mL WTA exclusive e-liquid. It contains 20 mg of alkaloids per mL.
I would never call it a 1 mg/mL WTA e-liquid. I don't look at fractional components, I look at the whole.
We could look at a non-WTA exclusive e-liquid. I would define a non-WTA exclusive e-liquid as a liquid containing WTA isolate and some plain nicotine, both added to the liquid.
Here's an example. Somebody might ask me, "I like moderate nicotine, but 20 mg/mL WTA-exclusive e-liquid is too much for me. Can you make something that contains less of the minor alkaloids, and more nicotine?" The answer is, "Yes, I can do that." Here's what I might do:
I would mix 500 mg of WTA isolate with 500 mg of nicotine. I would then add this mixture to PG and bring it to a total volume of 50 mL.
So here's what we have: 500 mg of WTA isolate and 500 mg of nicotine, this is a total of 1000 mg of alkaloids. So:
1000 mg alkaloids (WTA isolate plus nicotine) / 50 mL = 20 mg/mL.
I would consider 20 mg/mL as the alkaloid concentration here. I would not consider this to be the WTA concentration, because the WTA isolate only contributes 10 mg/mL to the total alkaloid concentration.
Now here's what we have:
nicotine from the WTA isolate: 500 mg * 0.95 = 475 mg
minor alkaloids from the WTA isolate: 500 mg * 0.05 = 25 mg
nicotine from the pure nicotine: 500 mg
So we have 975 mg of nicotine and 25 mg of minor alkaloids. If we divide by the final volume of 50 mL, we get:
Nicotine: 975 mg/50 mL
minor alkaloids: 25 mg/50 mL
So, we have an e-liquid that is 19.5 mg/mL in nicotine and 0.5 mg/mL in minor alkaloids, for a total of 20 mg/mL total alkaloids.
Note that this e-liquid made from equal parts of nicotine and minor alkaloids differs from the 20 mg/mL WTA exclusive eliquid. The WTA exclusive 20 mg/mL e-liquid is 19 mg/mL in nicotine and 1.0 mg/mL in minor alkaloids.
So, to summarize:
We can have WTA exclusive e-liquid. All alkaloids present originate from a WTA isolate. It's concentration in mg/mL is the total mg of alkaloids in 1 mL of the e-liquid.
We can have non-WTA exclusive e-liquid. Some alkaloids present originate from a WTA isolate and there is also some pure nicotine added. It's concentration in mg/mL is again the total mg of alkaloids in 1 mL of e-liquid. BUT... the WTA concentration will be less than 20 mg/mL. Using the example from earlier (10 mg/mL from nicotine, 10 mg/mL from WTA isolate), we have a 20 mg/mL e-liquid that is 10 mg/mL in WTA.
So, if I were bottling the stuff, I would label the 20 mg/mL WTA exclusive e-liquid as: 20 mg/mL (100% WTA). I would label the other liquid as: 20 mg/mL (50% WTA).
Confusing, maybe! I've not thought it all the way out.
Crap... 2 AM.