I have a little 3ml bottle I've been doing tiny mixes in just to test the flavors. For the recipe I mentioned, I used 68 drops total with to make up the following:
10 drops | Nicotine (100% PG @ 60 mg) ≈ 14.7%
35 drops | PG/VG (50/50) ≈ 51.4%
3 drops | Flavor 1 @ 100% PG ≈ 4.4%
20 drops | Flavor 2 @ 70/30 ≈ 29.4%
I'm using ≈ because I'm not adding the hundredth decimal point, but I'm not rounding up at all.
So you get the nicotine content by multiplying the percentage used in the mix by the mg content of the nicotine solution?
Also, how are you getting those percentages for the PG and VG?
I'll have a go at it.
It's a
good thing that you are asking these questions, as you should seriously know how to do this math when doing DIY
e-liquid.
It looks as if you know how to figure percentages already, from the recipes posted, but I'll cover that anyway.
Taking the nic liquid portion from your recipe, 10 drops out of a total of 68 drops, that would be 10/68 = 0.147, or 14.7% of the mix.
It should be noted that this is only correct if all of the various liquid drops sizes are equal, which is unlikely. Therefore, 14.7% is probably just an approximation in this case, but I'll ignore that.
Using the same math, you can figure the PG and VG content. Flavorings generally count as PG, so the only VG is half of your 50/50 mix. So, 17.5/68 = 25.7% VG. You can either subtract that from 100%, or calculate the PG portion to get the 74.3% PG.
As for the nicotine content (which should be interpreted as the total milligrams of nicotine in the batch,) you
need to know the number of milliliters of nicotine liquid added. That information is not in the post quoted here, so this can't be calculated here.
As Hoosier noted, your use of '60mg' is a common, but crappy, shorthand for mg/ml (milligrams per milliliter.) That expresses the nicotine concentration, or strength, in the solution by expressing the number of mg of nicotine per ml of liquid. This could be approximated here by taking 14.7% of 60mg/ml, which is about 8.8mg/ml. Once again, your drop sizes are probably all different, so this would not be precise.
Now, taking Hoosier's example of assuming a 10ml total batch, so that we have an actual number of ml to work with:
14.7% (nic liquid portion) of 10ml = 1.47ml of 60mg/ml nicotine solution
You can figure the nicotine
content by multiplying the number of ml of nicotine solution added, by the number of mg per ml in that concentration:
1.47ml * 60mg/ml = 88.2mg of nicotine in the batch of 10ml.
You can figure the nicotine
concentration by dividing the number of mg of nicotine by the number of ml in the batch:
88.2mg / 10ml = 8.82mg/ml (8.82mg of nicotine per ml of solution)
I hope I managed to make that somewhat understandable. I'm not always good at that.
