15mg Nicotine Booster.
These are only to be used in our shortfill bottles to increase the strength to 3mg.
2 x 15mg added to 80ml of Eliquid = 3mg.
1) Gather ingredients
2) Remove 100ml nib and attached o-ring
3) Add 2 bottles to make 3mg strength
4) Replace nib with a firm downward press (please ensure o-ring is removed to ensure leak proof pouring)
5) Shake bottle vigorously.