Hi BrazilyanGuy, welcome to the forum.
Freddo, it's 11mg per 1ml so you need to know the size of your cartridges. Classic ones usually hold about 1ml so a full cartridge would hold 11mg of nicotine.
Hi Kate, thank you!
Don't you think a cartridge of super e-cigarette has a duration of 5 or 6 cigarettes? I saw in the manual that 1 cartridge is the same as 20 cigarettes, but it's impossible, it finishes really fast.