Diy worm!

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Wow1420

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So the actual product will differ slightly depending on whether one starts with nic in PG or nic in VG. Hmm?

If I mix my 10mg 50/50 with a PG based nic, I end up with 1% nic, 49%PG and 50%VG. Then I switch to VG based nicotine, now I get 1% nic, 50%PG and 49% VG. (glossing over the mass to volume conversion issue.)

I guarantee I am in Zoidman's 90% who will never notice the difference. (It's probably more like 99% who will never notice)
 

Strangebrew

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If base mix is correct!

Example:
Take 100 mg. in 125 ml. with a base of 70% PG / 30% VG.
Convert it down to 18 mg. in 15 ml. at 85% PG / 15% VG.
Nicotine Base needed: 2.7 ml., PG needed, 10.82 ml., VG needed, 1.48 ml.
There is 1.70 ml. PG within the base and 0.73 ml. VG within the base.

The error in programming is to converts the 0.27 ml. of nicotine within the base into the 70/30 mix.
Which by the error has runs the PG to 10.86 ml. and VG to 1.44 ml.

Hence: Using the incorrect method to compute your e-juice runs it to 88% PG / 12% VG... doesn't matter if the error is small, it's an error!

In haste I posted this in error, lol. There is only a hair split in the percentages from 85/15.
 

DancingHeretik

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What is the volume of nicotine in 125 ml. of 100 mg. of 70% / 30% (PG / VG)?

I don't understand. What is the volume of a mg of nicotine in the first place? I just know that there are 12,500 mg of nicotine in this solution. So, I know the weight, but not the volume.

Does anyone even know the volume of nicotine per ml?
 

Bunnykiller

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I don't understand. What is the volume of a mg of nicotine in the first place? I just know that there are 12,500 mg of nicotine in this solution. So, I know the weight, but not the volume.

Does anyone even know the volume of nicotine per ml?


the volume of 1 ml of nicotine is ...... 1 ml :)
 

zoiDman

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That was obviously a typo. The question is, what is the volume of nic per mg?

I believe that Volume (P) is defined by Mass (M) divided by Density (D) ... P = M / D

And the Density of Nicotine is 1.009 g/ml and 1 mg = .001g

So P = .001g / 1.009g/ml => Volume of 1mg of Nicotine = .00099ml

Note: As Hoosier Mentioned. Density and Mass are Relative terms. The Density I think is given at 72F @ 1 Bar of Pressure. And the Mass was given at Sea Level.

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BTW - Someone Double check my Math. I seemed to have to think about the Units a Lot. And that is a Sign I have learned to Recognize as a Possible Order of Magnitude Error.
 

dannyv45

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Wow I have to admit I'm no math wiz but was able to follow the math and do find this discussion very interesting no mater how it was delivered. I gather the OP's original thought was to get us thinking and challenge his findings and although sounding a bit cryptic and coming off a bit opinionated in his method it did work:)

As far as the people in the 90% I fall in there somewhere in the rage of tasting to peppery, needs more steep time and may be a bit over flavored:)
 
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clh2121

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It has been an interesting thread... I never use a calculator like that so I don't really care...

But the OP did leave us some food for thought... It won't keep me up at night, but some obsessive mixer is gonna have fits...

Bravo.... Thread well done. Proving that algebra might actually have a real world application.
 

zoiDman

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...

Bravo.... Thread well done. Proving that algebra might actually have a real world application.

I Can't Tell you How Many Times I have Heard... "But when am I Every going to use all this Math?"... LOL.

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BTW - For what the Average User makes mg wise, much of all this Isn't all that Relevant. The Relative Error is So Small. But consider a Vendor who is Diluting Very High Nicotine Base?
 

MD_Boater

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I understand what the OP is saying, but I think he is confused as to what PG/VG ratio is used for. Nicotine content really has NO relationship to PG/VG ratio, which is simply the relationship between the quantities of those 2 ingredients. There is no need to include the volume, mass, or molecule count of nicotine, flavorings, or other ingredients when computing PG/VG ratio.

Example: Say I make an unflavored, no nicotine eLiquid using 45% PG, 45% VG, and 10% distilled water. What is the PG/VG ratio? It would be 50/50. Since DW is neither PG or VG, it would not be included in the calculation and the relationship of PG to VG in the 90% of eLiquid made up of those 2 ingredients is 1 part to 1 part, or 50%/50%.

Now since flavorings generally come in a PG suspension, the OP is technically correct in that there is some percentage of flavoring molecules taking away from the 100% PG that a juice calculator would include as flavoring in the total PG/VG ratio, but I don't think that anyone really cares about such a small difference. PG/VG content is a user preference. If someone wants a very high VG eLiquid, does it matter if their "90% VG" Liquid is really 89.6% VG? I don't think so, but I guess it all depends on how OCD one is.
 
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