About every day or so, someone posts about how to figure out a percentage, and it seems like they always have high % nicotine.
Really guys, it's basic algebra, you should have learned it in like 7th grade. If you can't do it easily, there are several calculators on this forum AKA "Read the stickies!"
If math is still beyond your reasoning, maybe DIY with concentrated nicotine is not a good idea.
Rant over, carry on...

If math is still beyond your reasoning, maybe DIY with concentrated nicotine is not a good idea.
Rant over, carry on...