Truth is I don't know where I'm at. I have 26, 24, 18, 16, 12, 6 and 0. They're all compatible flavors or the same flavors and I mix them right in my little eroll tanks all day. It really doesn't matter to me as I find I just hit it more often evidently when the nic is on the lower end and less often when higher. What I do know is I never go above 26 and do 0 for a while before bed.