Nicotine Levels

[Red_Bird]

Wow, vape till you're satisfied....period

If you have good ejuice and a nice coil + wick you are good to go.

 

[MemphisMisfit]

Found what I was looking for:

"Mg / ml Milligrams per Milliliter – a scale (or ratio) for measuring an ingredient component, in
liquid form, where accuracy is measured in mg per ml - or a percentage equivalent"

http://www.aemsa.org/wp-content/uploads/2012/12/AEMSA-Standards_Version-1-7.pdf

This is a source that I can refer to now in future discussions on the topic.

 

[SantanzChild]

1.8% per volume is 18mg/ml it is the same standered stated differently. You do not need a governingbody to establish standereds industries are very capable of doing it all on there own and very often do. They do not do it to be nice to the competition they do it for ease of use for the end user. The fact you can't accept that will be your issue but nic testing of a number of vendors over the years by a bunch of people here and else where has proven it.

 

[Mr.Mann]

Found what I was looking for:

"Mg / ml Milligrams per Milliliter – a scale (or ratio) for measuring an ingredient component, in
liquid form, where accuracy is measured in mg per ml - or a percentage equivalent"

http://www.aemsa.org/wp-content/uploads/2012/12/AEMSA-Standards_Version-1-7.pdf

This is a source that I can refer to now in future discussions on the topic.

Wait, so all you were looking for a link that said liquid nicotine in ejuice is measured in milligram per milliliter or a percentage equivalent? As in mg/mL?

 

[Road_House]

1 ml is 1/1000 of a liter
18 mg(in 1 ml) divided by 1000 = .018 = 1.8%
Expressed as a percentage (based on 100) you are reducing the fraction. 18/1000 divided by 10/10 = 1.8/100 or 1.8%
To convert mg/ml to percent move the decimal one place to the left. 18 mg/ml = 1.8%
To convert percent to mg/ml move the decimal point one place to the right 1.8% = 18 mg/ml

 

[Abe_Katz]

I keep hearing many of you state that mg per ml (mg/ml) is a "standard", however that would imply an agreed upon system of measurement for e-juice. A system that I have yet to confirm.

I would suggest if you require confirmation that you check out vendor websites. Most vendors that I've purchased from list their nicotine content in mg/mL.

It is as it were an industry standard. And industry standards do not require governmental legislation to be enacted. They will arise on their own.

None of the bottles I have list the mg/ml standard. The closest I have found was a bottle of Wicked brand (Red Label) that states it is "1.8% per volume". This does not equate with mg/ml.

1.8% per volume is 18mg/mL. I'm not sure about the maths involved--someone else can answer that question I'm simply not good at converting percents into mg/mL other than knowing I need to move the decimial one place to the left or right depending on what I am trying to express.

The only difference between having a unenforced industry standard and a legally binding legislative standard is that some vendors may choose to express the nicotine content in different ways. Of which there are 3 different types I know of (though all are based directly on the mg/mL standard).

For example:
Juice A: Labeled as 12mg (it is assumed that the user knows this is mg/ml)
Juice B: Labeled as 1.2% per volume (again assumed that the user knows that the percent is calculated using mg/mL)
Juice C: Labeled as 12mg/mL (this one should be obvious)

If mg/ml is the standard, then by using a 12mg strength bottle of juice, I would theoretically only get a maximum of 6mg of nicotine in 0.5ml of juice.

Theoretically you could absorb 6mg of nicotine. In reality if you vape 0.5ml of juice with a 12mg/ml nicotine you are absorbing no more than 6mg, but probably far less than that.

How you vape, the acidity of your mouth and throat (as in have you recently eaten something acidic) and other factors could mean that you are absorbing far less than 6mg of nicotine.

I do not believe this to be true. I believe that a single drop of 12mg juice would contain 1.2% nicotine. This is what "per volume" would actually infer.

Correct. Assuming that we are speaking of a 12mg/ml juice, the juice itself would have a nicotine percentage of 1.2% per volume. Assuming that you are measuring in drops and assuming that the juice is well mixed each drop would be 1.2% nicotine and 98.8% everything else. (PG, VG, Flavoring)

Now, unless someone can point me in the direction of a governing body for e-juice manufacturing that states the nicotine strength is measured on a mg/ml basis, then I would have to say these are just guesses on the part of the author and not from an agreed upon industrial standard.

http://www.aemsa.org/wp-content/uploads/2012/12/AEMSA-Standards_Version-1-7.pdf

Not exactly a governing body as AEMSA is a voluntary organization. But these standards are definately sound, and the article itself is a good read. In fact I've implemented many of these same standards (the safety and labeling related ones) into my own DIY.