I already buy my own juice and fill my own carts. I was just curious as to how long a cart should be lasting and wanted to make sure that I wasn't vaping like 3-4 packs worth a day.
To give you an idea:
An analogue cig contains about 8mg of Nicotine total. A smoker only gets to absorb 1-2 mg of this total when it is smoked. So, in theory, a 20-a-day smoker would absorb 40 mg nicotine approx (based on 2 mg per cig).
If your e-liquid is at 16 mg it would take 2.5 ml ( about 100 drops) to equal 40 mg. Now I don't belive when you Vape you get 100% efficiency with absorbing Nicotine from the vapour you inhale. So about 3 ml should roughly equate to a pack of 20 analogues a day based at 16 mg/ml liquid.
This, of course, is dependant on a lot of different variables, like how deep you draw, how long you hold it, etc, etc.
In the end, let your body be your guide....it will tell you if you're getting too much (but in saying that....try not to over do it too. Moderation is the key in all things).
