Take into words, liquid with a nicotine focus of 100 mg/ml has 100 milligrams of nicotine in each milliliter of liquid. 12 mg/ml liquid has 12 milligrams of nic in each milliliter of fluid. If you're wanting to do some advanced mixing, or simply wish to make life a little less complicated when mixing, a calculator can be very useful. Here's a couple of really terrific calculators you can use.
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