What are these 3 Molecules

brittanyNI;4469513 said:

The problem is this "10 ppm" stuff doesn't translate well into drops and ml. How much of a 5% solution do you add to get it?

And in the case of the 5% Acetyl Pyrazine solution sold by TPA, even a single drop amounts to way more than 10ppm for most batches people would work with.

The answer is to dilute what they have sent even further for ordinary use.

What you do is dilute it sufficiently that 1 drop (figuring 25 drops per ml) would amount to 5ppm in a 10ml batch, so if you wanted 10ppm you'd use 2 drops. This give you a bit of flexibility.

I'm not sure if you want me to skip the math and just give the answer.

Bear with me while I do the math.

How much does 5ppm of 10ml of water weigh? It is 5 millionths. Divide 10g (1ml of water weighs 1g) by 1,000,000 and multiply by 5. The answer is .00005g. So we want each drop to contain .00005g of Acetyl Pyrazine.

One ml of 5% Acetyl Pyrazine contains .05g, and one drop contains .002g.

To make 6ml of solution such that each drop contains .00005g, the entire bottle should contain .00005g x 25 drops x6 = .0075 g. That's close enough to .008 g for government work.

So what you do is take an empty 6ml squeeze dropper bottle (available ubiquitously from diy suppliers), add 4 drops of the 5% Acetyl Pyrazine solution (which will give you 4 x .002g), and then fill it the rest of the way with propylene glycol.

Now, every drop of this solution that you add to a 10 ml batch of ejuice gives you approximately 5 ppm of Acetyl Pyrazine.

This same technique will work for any of the 5% solutions sold by TPA. Just put 4 drops in a 6ml dropper, fill it the rest of the way with PG, mix thoroughly and shazam -- you now have 5ppm (or close enough anyway) per drop when added to 10ml of ejuice.

So to get 10ppm you add 2 drops.

If you are making 5ml batches, 1 drop would be 10ppm.
If you are making 6ml batches, 1 drop would be about 8ppm.

I demonstrated the technique so it can be modified for different concentrations and batch sizes.


Note: I've simplified things a little bit because PG doesn't weigh the same as water etc. But we are making flavors rather than explosives so the benefit of clarity is IMO more important than the absolute accuracy that would come from modifying for the density of components and correcting for standard temperature and pressure, etc.

Click to expand...